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All Products ➞ Bordo ➞ Taps & Dies ➞ Chrome Alloy Taps ➞ Chrome Alloy NPSF (Dryseal)
1/4" x 18 NPS Bottoming Chrome Tap
| Part Number: | 4256-1/4B |
| Brand: | Bordo |
| Barcode: | 9326518045212 |
| Pack Qty: | 1 |
| Diameter (inch): | 1/4 |
| Drill Diameter (mm): | 11.2 |
| Lead: | Bottoming |
| Overall Length (mm): | 67 |
| Pitch (tpi): | 18 |
| Thread Form: | NPSF |
About this item:
- 1/4" x 18 NPS Bottoming Chrome Tap
- Chrome Alloy NPSF Bottoming Hand Tap.
- Used as thread chasers to clean an existing thread.
- They can also be used to create a new female thread in non-ferrous metals and plastics.
- Chrome alloy taps are not suitable for creating precision, safety or critical threads.
- National Pipe Straight Fuel (Dryseal) is a variation of the Dryseal thread.
- It is used for internal threads and an NPTF external thread can be screwed into it to provide both a satisfactory mechanical connection and hydraulic seal.
- A combination of a parallel and tapered thread would not appear to be ideal but it is widely used.
- Many quick disconnect couplers for example have the NPSF thread and are recommended by the manufacturer for use with NPT and NPTF.
- 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.