Standard ASME B18.6.3
英制螺纹成型螺钉和三角牙自攻螺钉
| Dimensions in INCHES - source ASME B18.6.3 TABLE 45 for type TRS Tapping Screws | ||||||
| Nominal screw size | Basic screw diameter | Major or C diameter (max) | P Point diameter (max) | |||
| 2-56 | 0.086 | 0.0875 | 0.07 | |||
| 3-48 | 0.099 | 0.101 | 0.081 | |||
| 4-40 | ||||||
| 5-40 | ||||||
| 6-32 | ||||||
| 8-32 | ||||||
| 10-24 | ||||||
| 10-32 | ||||||
| 12-24 | ||||||
| 1/4-20 | ||||||
| 5/16-18 | ||||||
| 3/8-16 | ||||||
| 7-16-14 | ||||||
| 1/2-20 | ||||||