Screws with British Standard Whitworth Threads (rationalized series)
AS /NZS 2451 - 1998
Display drawing:
| Screw Thread | 1/4 | ||
| D | 0.25 | ||
| P | BSW | 20 | |
| S | Max | 0.445 | |
| S | Min | 0.435 | |
| E | Min | 0.51 | |
| R | Min | 1/32 | |
| K | Max | 0.186 | |
| K | Min | 0.166 | |