| Code |
TPI
Range |
Leaves |
Thread
Type |
| RSPG/1 |
4-42 |
31 |
American
National - 60° |
| RSPG/2 |
4-84 |
52 |
American
National - 60° |
| RSPG/3 |
4-42
& 0.25 to 6.0 |
31+24=55 |
Combination
American National
- 60° and Metric 60° Threads |
| RSPG/4 |
0.25
to 2.5mm |
28 |
International
Metric Standard 60° |
| RSPG/5 |
0.4
to 7.0mm |
23 |
International
Metric Standard 60° |
| RSPG/6 |
4
to 62 & 0.25 to 6.0mm |
28+24=52 |
Combination
of whit worth Standard 55° and Matric Standard 65° |
| RSPG/7 |
4-62
G |
28 |
whit worth
Standard 55° |
|