PROFESSIONAL REFERENCE CENTRE

Choose the right tool before you order

Practical guides, reference charts and selection advice to confirm dimensions, materials and applications.

11 technical guides
THREADING Tap drill size guide for machine tapping Find the recommended drill diameter before tapping and reduce the risk of damaged or weak threads. Open guide THREADING Metric tap diameter and pitch guide Quickly compare metric diameters, thread pitches and their corresponding tap-drill selections. Open guide EXTRACTION Left-hand tools for broken fasteners Learn when a left-hand drill can help and how to prepare for a cleaner fastener-removal job. Open guide EXTRACTION Screw extractor buying guide Choose the appropriate extractor style and size for the fastener, available access and break condition. Open guide DRILLING HSS vs cobalt drill bits for steel Compare heat resistance, tool life and the best applications for each drill-bit material. Open guide MAG DRILLING How to choose an annular cutter Confirm cutting depth, diameter, geometry and magnetic-drill compatibility before ordering. Open guide MAG DRILLING Magnetic drill parts buying guide Identify the components, accessories and replacement parts that fit your magnetic-drilling equipment. Open guide HOLE FINISHING Precision reamers buying guide Compare reamer styles for hole enlargement, alignment and accurate final sizing. Open guide TURNING Cutting tool bits for lathe work Select the tool material and geometry suited to common turning and profiling operations. Open guide FABRICATION Cutting tools for steel fabrication Explore the tool families used to drill, enlarge, countersink and prepare steel components. Open guide MASONRY Concrete and masonry tool-set guide Compare tool sets by work material, required diameter and jobsite application. Open guide

Counterbores for Hole Preparation for Hole Finishing Tools

The best counterbores choice for hole finishing balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

Counterbores for Hole Preparation for Hole Finishing Tools

The best counterbores choice for hole finishing balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

Concrete & Masonry Tools for Concrete & Masonry Tools

The best concrete & masonry tools choice for concrete masonry balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

End Mills for CNC & Metal Milling for Milling Tools

The best end mills choice for milling balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

Carbide Burs for Metal Deburring for Industrial Machining Tools

The best carbide burs choice for industrial machining balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

Annular Cutters for Magnetic Drills for Magnetic Drill Tools

The best annular cutters choice for mag drilling balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

Industrial Cutting Tools for Machining for Industrial Machining Tools

The best industrial cutting tools choice for industrial machining balances performance, compatibility and total job cost. Use this practical checklist to move from the application to the right product configuration.

SDS-Plus Shank Explained

SDS-Plus is a hammer-bit shank system for compatible rotary hammers and lighter concrete drilling applications.

How to Read Metric Tap Markings

Metric tap markings combine nominal diameter and pitch, such as M10 x 1.5.

What Do NPT and NPS Mean?

NPT is tapered pipe threading while NPS is straight pipe threading; the fitting standard determines the tool.

What Do UNC and UNF Mean?

UNC and UNF identify coarse and fine unified thread series used with matching taps, dies and fasteners.

What Is a 118-Degree Drill Point?

The 118-degree point is a common general-purpose geometry for drilling a wide range of materials.

What Is a 135-Degree Split Point?

A split-point geometry helps reduce walking and can improve starting behavior on many metal drilling jobs.

How to Read Drill Bit Sizes

Drill bit sizes may be fractional, metric, letter or number; the label determines the actual diameter.