Product Description
BA Thread HSS Spiral Point Ground Hand and Machine Taps
UK-made high speed steel ground taps for cutting internal British Association (BA) threads. Designed for machine tapping and also suitable for hand use with a compatible tap wrench. The spiral point directs chips forward, making these taps suited to through holes with clearance for chip discharge.
Thread Sizes and Pitches
| Thread Size | Thread Pitch | Approximate Threads Per Inch |
|---|---|---|
| 2BA | 0.81mm | 31.4 TPI |
| 4BA | 0.66mm | 38.5 TPI |
| 6BA | 0.53mm | 47.9 TPI |
TPI values are approximate inch equivalents of the BA thread pitches. Select the required size from the product options.
Key Features
- British Association thread form
- High speed steel construction
- Ground thread cutting profile
- Spiral point geometry directs chips ahead of the tap
- Suitable for through-hole tapping
- For machine tapping or hand use with a suitable holder
- UK made
BS 93 is the reference standard for British Association screw threads. This reference relates to the thread form and does not specify the tap body dimensions. Please contact us before ordering to confirm compliance certification availability.
Prepare the correct tapping drill hole for the selected BA size and workpiece material. Keep the tap aligned with the hole, use suitable cutting lubricant and allow clearance beyond the hole for the tap lead and chips.
Related Products
Specifications are intended as a guide. Confirm the required BA size, pitch, holder compatibility and application before ordering.
