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All Products ➞ Bordo ➞ Taps & Dies ➞ HSS Hand and Machine Taps ➞ HSS Tap BSW
1-1/4" x 7 BSW HSS Tap Set
| Part Number: | 3028-1.1/4TS |
| Brand: | Bordo |
| Barcode: | 9326518026358 |
| Pack Qty: | 1 |
| Diameter (inch): | 1-1/4 |
| Drill Diameter (mm): | 28 |
| Lead: | Set |
| Overall Length (mm): | 151 |
| Pitch (tpi): | 7 |
| Thread Form: | BSW |
About this item:
- 1-1/4" x 7 BSW HSS Tap Set
- HSS BSW Hand and Machine Tap Set.
- British Standard Whitworth has a thread angle of 55 degrees as opposed to 60 degrees in Metric and Unified threads.
- This thread form was developed by Sir Joseph Whitworth in 1841.
- The thread form has rounded roots and crests and is specified in BS84:1956.
- Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole.
- Intermediate Taps have a lead of four threads and are used in most general purpose applications to cut a thread true to a pre-drilled pilot hole.
- Taper Taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes.
- Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.