01 — Essential Specifications
Choose with confidence
Essential specifications
The facts that matter most when choosing the right product in this family.
02 -- Materials, Applications & Machines
Working compatibility
Materials, applications & machines
Quickly confirm what the tool can cut, the work it is designed to perform, and the equipment it is intended to run on.
Compatible materials
Recommended workpiece materials
- Cast iron
- Alloy steel
- Steel
Recommended applications
Typical jobs and operations
- High-speed steel
- internal threading in carbon steel, alloy steel, cast iron and other machinable metals
- Threading
- Holemaking
Compatible machines
Equipment and operating methods
- Manual
- Tapping machine
03 -- Complete Technical Specifications
Technical data
Complete technical specifications
Open only the groups you need to confirm construction, dimensions, and operating requirements.
Construction & identification
Tool typeTaps
Tool subtypeHand Taps
Detailed styleHSS · Bottoming
Manufacturer seriesDWTST
Series familyDWTST
Measurement systemWire/Letter/Number
Tool materialHigh Speed Steel
Coating / finishUncoated (Bright)
Cutting directionRight Hand
Manufacturer part numberDWTST8-48B
Dimensions & fit
Size#8-48 UNS
Drill / wire / letter designation#8
Cutting diameter#8-48
Pack quantity1
Threading
Thread size#8
Thread standard / formUNS
Threads per inch48.0 TPI
Tap chamfer styleBottoming
04 -- Why Choose this series
Series advantage
Why choose the DWTST series
DWTST
Dedicated bottoming tap geometry in high-speed steel for a special UNS thread size
Features supporting this advantage
- Dedicated bottoming tap geometry in high-speed steel for a special UNS thread size
- High Speed Steel
- Uncoated (Bright)
05 -- Compatibility & What's Included
06 -- Use Notes & Technical Description
Before you use it
Use notes & technical description
Important fit, operating, and care guidance to review before putting the tool to work.
View the complete technical description
Drill America DWTST8-48B 8-48 UNS HSS Bottoming Tap
DWTST8-48B is a Drill America high-speed steel bottoming tap for cutting the special-size 8-48 UNS internal thread. This single bottoming tap is designed for the 8-48 UNS thread form.
Use this HSS hand tap for controlled threading in machinable metals such as carbon steel, alloy steel, cast iron and similar workpieces. Apply suitable tapping lubricant, maintain alignment and use speeds and feeds appropriate for the material and thread size.
Key Features
- Manufacturer: Drill America.
- MPN: DWTST8-48B.
- Thread: 8-48 UNS.
- Tap style: Bottoming Tap.
- Material: High-speed steel (HSS).
- Package quantity: 1.
- UPC: 887861082808.
Technical Specifications
| Manufacturer part number | DWTST8-48B |
|---|---|
| Thread size | 8-48 UNS |
| Tool type | HSS Bottoming Tap |
| Material | High-speed steel |
| Application | Internal thread cutting in machinable metals |
| Package quantity | 1 |
| UPC | 887861082808 |
Secure the workpiece, confirm the tap is aligned with the hole, use appropriate cutting fluid and wear suitable eye protection.
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