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All Products ➞ Goliath Threading Tools ➞ Taps Hand & Machine ➞ HSS-Co5 Fluteless Taps ➞ BSW
1/2" x 12 BSW Fluteless HSS-Co5 Tap - Goliath
| Part Number: | B15AG |
| Brand: | Goliath |
| Barcode: | 9349009019110 |
| Pack Qty: | 1 |
| Diameter (inch): | 1/2 |
| Drill Diameter (mm): | 11.6 |
| Overall Length (mm): | 89 |
| Pitch (tpi): | 12 |
| TPI: | 12 |
| Tolerance: | Medium |
| Standard: | ISO529 |
| Thread Form: | BSW |
About this item:
- 1/2" x 12 BSW Fluteless HSS-Co5 Tap - Goliath
- HSS-Co (Cobalt) Bright Finish BSW Fluteless Machine Tap.
- HSS Fluteless (Roll Form) Taps.
- Fluteless taps are also referred to as "Roll Form" or "Thread Flow" taps.
- Unlike standard taps, fluteless taps create internal threads by pressure deformation, rather than by material removal.
- As a result, no chips are formed as no material is removed.
- The thread is formed by the tap in the ductile material creating threads that have a smoother surface and greater tensile strength under dynamic stress than cut threads.
- It is essential to use a high quality lubricating fluid when using fluteless taps.
- Materials with a minimum elongation of 5% and a tensile strength no greater than 1,000 N/mm2 are suitable for thread forming.
- 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.
- Manufactured from HSS this fluteless tap is designed for use in medium tensile materials and is for hand or general machine use.
- IMPORTANT - Fluteless Taps use different tapping drill sizes than standard taps.