Product Description
BA high speed steel spiral flute taps for creating internal British Association threads, especially in blind hole tapping applications.
These BA HSS spiral flute taps are designed with helical flutes that help pull chips and swarf back out of the hole towards the shank, opposite to the tapping direction. This makes them especially useful for blind holes, where chip evacuation is important for cleaner thread cutting and improved tap life compared with standard straight flute hand taps.
- Thread form: BA / British Association
- Material: High speed steel / HSS
- Flute type: Spiral flute / helical flute
- Use: Creating new internal threads
- Best suited for: Blind hole tapping
- Thread sizes available: 2BA, 4BA and 6BA
- Chip direction: Pulls swarf back towards the tap shank
| Thread Size | Pitch | Approx. TPI | Thread Form | Material | Flute Type | Best Use |
|---|---|---|---|---|---|---|
| 2BA | 0.81mm | 31.4 | BA | High Speed Steel | Spiral Flute | Blind Holes |
| 4BA | 0.66mm | 38.5 | BA | High Speed Steel | Spiral Flute | Blind Holes |
| 6BA | 0.53mm | 47.9 | BA | High Speed Steel | Spiral Flute | Blind Holes |
Please note: BA threads are specified by pitch in millimetres. The TPI figures above are approximate equivalents for reference only.
Please note: Specifications are intended as a guide only. If dimensions are critical to your project, please check with us before ordering.
