{"title":"Screw sizes from 1\/4\" to 1\/2\" Countersinks","description":"\u003cdiv class=\"collection-description\"\u003e\n\u003ch2\u003eScrew sizes from 1\/4\" to 1\/2\" Countersinks\u003c\/h2\u003e\n\u003cp\u003eShop Screw sizes from 1\/4\" to 1\/2\" Countersinks with product data organized for fast, confident tool selection. Review diameter, length, shank, geometry and pack configuration on each product page before ordering.\u003c\/p\u003e\n\u003ch3\u003eSelection guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrands represented: Champion.\u003c\/li\u003e\n\u003cli\u003eCommon material matches: Steel, General-Purpose.\u003c\/li\u003e\n\u003cli\u003eTypical applications: Hole Finishing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the workpiece material, required dimensions and machine or holder compatibility before use. Apply the correct cutting fluid where recommended and follow the manufacturer’s speed, feed and safety guidance.\u003c\/p\u003e\n\u003cp\u003eContinue browsing \u003ca href=\"\/collections\/type-countersinks\"\u003eCountersinks\u003c\/a\u003e or \u003ca href=\"\/collections\/drill-bits-for-metal-steel-stainless-steel\"\u003eDrill Bits \u0026amp; Holemaking Tools\u003c\/a\u003e for related sizes, styles and accessories.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk8-2","title":"Champion CSK8-2 82° HSS Piloted Zero-Flute Countersink | 1\/4\" Screw x 17\/64\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK8-2 82° HSS Piloted Zero-Flute Countersink | 1\/4\" Screw x 17\/64\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK8-2\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 1\/4\" flat-head screws. Its fixed 17\/64\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 33\/64\" body diameter, 3\/8\" shank and 2 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK8-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e1\/4\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e33\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e17\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 1\/4\" | Shank 3\/8\" | Pilot 17\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK8-2 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 17\/64\" pilot helps keep the 33\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 1\/4\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364057700,"sku":"CHA-CSK8-2","price":33.75,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk10-1","title":"Champion CSK10-1 82° HSS Piloted Zero-Flute Countersink | 5\/16\" Screw x 5\/16\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK10-1 82° HSS Piloted Zero-Flute Countersink | 5\/16\" Screw x 5\/16\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK10-1\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 5\/16\" flat-head screws. Its fixed 5\/16\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 41\/64\" body diameter, 3\/8\" shank and 2-3\/16 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK10-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e5\/16\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e41\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e5\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-3\/16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 5\/16\" | Shank 3\/8\" | Pilot 5\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK10-1 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 5\/16\" pilot helps keep the 41\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 5\/16\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364123236,"sku":"CHA-CSK10-1","price":40.31,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk10-2","title":"Champion CSK10-2 82° HSS Piloted Zero-Flute Countersink | 5\/16\" Screw x 21\/64\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK10-2 82° HSS Piloted Zero-Flute Countersink | 5\/16\" Screw x 21\/64\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK10-2\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 5\/16\" flat-head screws. Its fixed 21\/64\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 41\/64\" body diameter, 3\/8\" shank and 2-3\/16 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK10-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e5\/16\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e41\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e21\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-3\/16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 5\/16\" | Shank 3\/8\" | Pilot 21\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK10-2 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 21\/64\" pilot helps keep the 41\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 5\/16\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364254308,"sku":"CHA-CSK10-2","price":40.31,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk12-1","title":"Champion CSK12-1 82° HSS Piloted Zero-Flute Countersink | 3\/8\" Screw x 3\/8\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK12-1 82° HSS Piloted Zero-Flute Countersink | 3\/8\" Screw x 3\/8\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK12-1\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 3\/8\" flat-head screws. Its fixed 3\/8\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 49\/64\" body diameter, 1\/2\" shank and 2-5\/8 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK12-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e3\/8\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e49\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-5\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 3\/8\" | Shank 1\/2\" | Pilot 3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK12-1 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 3\/8\" pilot helps keep the 49\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 3\/8\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364352612,"sku":"CHA-CSK12-1","price":53.47,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk12-2","title":"Champion CSK12-2 82° HSS Piloted Zero-Flute Countersink | 3\/8\" Screw x 25\/64\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK12-2 82° HSS Piloted Zero-Flute Countersink | 3\/8\" Screw x 25\/64\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK12-2\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 3\/8\" flat-head screws. Its fixed 25\/64\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 49\/64\" body diameter, 1\/2\" shank and 2-5\/8 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK12-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e3\/8\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e49\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e25\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-5\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 3\/8\" | Shank 1\/2\" | Pilot 25\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK12-2 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 25\/64\" pilot helps keep the 49\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 3\/8\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364418148,"sku":"CHA-CSK12-2","price":53.47,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk14-1","title":"Champion CSK14-1 82° HSS Piloted Zero-Flute Countersink | 7\/16\" Screw x 7\/16\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK14-1 82° HSS Piloted Zero-Flute Countersink | 7\/16\" Screw x 7\/16\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK14-1\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 7\/16\" flat-head screws. Its fixed 7\/16\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 53\/64\" body diameter, 1\/2\" shank and 2-3\/4 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK14-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e7\/16\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e53\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e7\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-3\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 7\/16\" | Shank 1\/2\" | Pilot 7\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK14-1 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 7\/16\" pilot helps keep the 53\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 7\/16\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364516452,"sku":"CHA-CSK14-1","price":66.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk14-2","title":"Champion CSK14-2 82° HSS Piloted Zero-Flute Countersink | 7\/16\" Screw x 29\/64\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK14-2 82° HSS Piloted Zero-Flute Countersink | 7\/16\" Screw x 29\/64\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK14-2\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 7\/16\" flat-head screws. Its fixed 29\/64\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 53\/64\" body diameter, 1\/2\" shank and 2-3\/4 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK14-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e7\/16\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e53\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e29\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-3\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 7\/16\" | Shank 1\/2\" | Pilot 29\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK14-2 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 29\/64\" pilot helps keep the 53\/64\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 7\/16\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364614756,"sku":"CHA-CSK14-2","price":66.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk16-1","title":"Champion CSK16-1 82° HSS Piloted Zero-Flute Countersink | 1\/2\" Screw x 1\/2\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK16-1 82° HSS Piloted Zero-Flute Countersink | 1\/2\" Screw x 1\/2\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK16-1\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 1\/2\" flat-head screws. Its fixed 1\/2\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 15\/16\" body diameter, 1\/2\" shank and 2-13\/16 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK16-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e1\/2\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e15\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-13\/16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 1\/2\" | Shank 1\/2\" | Pilot 1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK16-1 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 1\/2\" pilot helps keep the 15\/16\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 1\/2\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364713060,"sku":"CHA-CSK16-1","price":69.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"},{"product_id":"champion-csk-piloted-weldon-style-82-piloted-zero-flute-countersinks-variant-csk16-2","title":"Champion CSK16-2 82° HSS Piloted Zero-Flute Countersink | 1\/2\" Screw x 33\/64\" Pilot","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eChampion CSK16-2 82° HSS Piloted Zero-Flute Countersink | 1\/2\" Screw x 33\/64\" Pilot — Weldon-Style Piloted Countersink\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCSK16-2\u003c\/strong\u003e is an exact \u003cstrong\u003e82° HSS piloted zero-flute countersink\u003c\/strong\u003e for 1\/2\" flat-head screws. Its fixed 33\/64\" pilot follows the existing hole while the single cutting edge creates a concentric, chatter-resistant countersink for clean fastener seating.\u003c\/p\u003e\n\u003cp\u003eThis Champion CSK-PILOTED configuration has a 15\/16\" body diameter, 1\/2\" shank and 2-13\/16 overall length. The Weldon-style zero-flute design supports controlled material removal, smooth finishes and repeatable alignment in pre-drilled holes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eCSK16-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExact screw size\u003c\/th\u003e\n\u003ctd\u003e1\/2\" flat-head screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded angle\u003c\/th\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTool style\u003c\/th\u003e\n\u003ctd\u003ePiloted zero-flute, Weldon-style countersink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody diameter\u003c\/th\u003e\n\u003ctd\u003e15\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePilot diameter\u003c\/th\u003e\n\u003ctd\u003e33\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall tool length\u003c\/th\u003e\n\u003ctd\u003e2-13\/16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-speed steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource variant configuration\u003c\/th\u003e\n\u003ctd\u003eFor screws 1\/2\" | Shank 1\/2\" | Pilot 33\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this Champion CSK16-2 for precision countersinking, deburring pre-drilled holes, edge finishing and flat-head screw seating in steel, aluminum, brass, copper, plastics and other suitable non-ferrous materials. It is designed for portable power drills and drill presses where the pilot can engage an existing hole.\u003c\/p\u003e\n\u003ch3\u003ePiloted Countersinking Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe 33\/64\" pilot helps keep the 15\/16\" cutting body centered in the pre-drilled hole, reducing wandering and supporting a uniform 82° chamfer. Match the pilot to the hole and the cutter to the exact 1\/2\" screw size before operation.\u003c\/p\u003e\n\u003cp class=\"compliance\"\u003e\u003csmall\u003eConfirm the pilot fits the existing hole, secure the workpiece, use moderate RPM and apply light pressure for a clean finish. Cutting tools may shatter if misused; wear appropriate PPE and follow the machine and tool manufacturer's instructions.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion Cutting Tool","offers":[{"title":"Default Title","offer_id":48766364778596,"sku":"CHA-CSK16-2","price":69.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/3121\/0340\/files\/CSK-PILOTED-FLAT.jpg?v=1766511515"}],"url":"https:\/\/www.cuttingtoolsoutlet.com\/collections\/type-countersinks-size-screw-sizes-from-1-4-to-1-2.oembed","provider":"Cutting Tools Outlet","version":"1.0","type":"link"}