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All Products ➞ Goliath Threading Tools ➞ Taps Hand & Machine ➞ HSS Straight Flute Short Machine and Hand Taps ➞ BSW
1.1/8" x 7 BSW Bottoming HSS Tap - Goliath
| Part Number: | C21AC4 |
| Brand: | Goliath |
| Barcode: | 9349009007544 |
| Pack Qty: | 1 |
| Diameter (inch): | 1.1/8 |
| Drill Diameter (mm): | 24.75 |
| Lead: | Bottoming |
| Overall Length (mm): | 138 |
| Pitch (tpi): | 7 |
| TPI: | 7 |
| Tolerance: | CL 2 |
| # Flutes: | 4 |
| Standard: | ISO529 |
| Thread Form: | BSW |
About this item:
- 1.1/8" x 7 BSW Bottoming HSS Tap - Goliath
- HSS Bright Finish BSW Hand and Machine Bottoming Tap.
- HSS Straight Flute Short Machine and Hand Taps.
- These general purpose taps are ideal for creating new threads in a wide variety of materials.
- Goliath HSS taps provide a high hardness to toughness ratio, compressive and tensile strength, good abrasion resistance and resistance to micro-chipping, ensuring a long tool life.
- British Standard Whitworth angle of thread is 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.
- Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap.
- Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.