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Thread Information
Metric Threads
Thread Size |
ISO Pitch Coarse |
Rod Diameter (mm) |
Weight |
M4 |
0.7 |
3.48 3.43 |
0.072 |
M5 |
0.8 |
4.39 4.34 |
0.118 |
M6 |
1.0 |
5.28 5.23 |
0.170 |
M7 |
1.0 |
6.25 6.20 |
0.239 |
M8 |
1.25 |
7.11 7.06 |
0.308 |
M10 |
1.5 |
8.91 8.86 |
0.488 |
M12 |
1.75 |
10.77 10.72 |
0.712 |
Inch Threads
Thread Size |
Rod Diameter (inches) |
Weight (lbs/ft) |
6BA |
.0955 .0935 |
0.024 |
1/8 BSW |
.107 .105 |
0.031 |
4BA |
.124 .122 |
0.040 |
2BA |
.162 .160 |
0.068 |
10-32 UNF |
.167 .165 |
0.073 |
0BA |
.208 .206 |
0.114 |
1/4 BSF |
.223 .221 |
0.132 |
1/4 UNF |
.224 .222 |
0.132 |
5/16 BSW |
.273 .271 |
0.198 |
5/16 UNC |
.273 .271 |
0.198 |
5/16 BSF |
.280 .278 |
0.207 |
5/16 UNF |
.282 .280 |
0.212 |
3/8 BSW |
.332 .330 |
0.293 |
3/8 UNC |
.332 .330 |
0.293 |
3/8 BSF |
.339 .337 |
0.306 |
3/8 UNF |
.343 .341 |
0.313 |
7/16 BSW |
.390 .388 |
0.405 |
7/16 BSF |
.398 .396 |
0.421 |
1/2 BSW |
.443 .441 |
0.522 |
1/2 UNC |
.446 .444 |
0.529 |
1/2 BSF |
.456 .454 |
0.553 |
1/2 UNC |
.462 .460 |
0.568 |
Female Cut-Threads
Metric Threads
Thread Size |
ISO Pitch COARSE |
Tapping Drill |
ISO Pitch FINE(C.E.T.O.P) |
Tapping Drill |
M4* |
0.7 |
3.3 |
– |
– |
M5* |
0.8 |
4.2 |
– |
– |
M6* |
1.0 |
5.0 |
– |
– |
M7 |
1.0 |
6.0 |
– |
– |
M8* |
1.25 |
6.8 |
1.0 |
7.0 |
M10* |
1.5 |
8.5 |
1.25** |
8.75 |
M12* |
1.75 |
10.2 |
1.25** |
10.2 |
M14* |
2.0 |
12.0 |
1.5** |
– |
M16* |
2.0 |
14.0 |
1.5** |
14.5 |
M18* |
2.5 |
15.5 |
1.5** |
– |
M20* |
2.5 |
17.5 |
1.5** |
18.5 |
M24* |
3.0 |
21.0 |
2.0** |
22.0 |
M27* |
3.0 |
24.0 |
2.0** |
– |
M30* |
3.5 |
26.5 |
2.0** |
28.0 |
UNF Threads
Thread Size |
Pitch (tpi) |
Tapping Drill (mm) |
10* |
32 |
4.1 |
1/4* |
28 |
5.5 |
5/16* |
24 |
6.9 |
3/8* |
24 |
8.5 |
7/16 |
20 |
9.9 |
1/2* |
20 |
11.5 |
9/16* |
18 |
12.9 |
5/8* |
18 |
14.5 |
3/4* |
16 |
17.5 |
7/8* |
14 |
20.4 |
1* |
12 |
23.25 |
*Indicates the Standard Threads used on our Clevises, Ball Joints and Rod Ends; not all of our products are available in all these thread sizes.
**Additional Standard Threads available on our GM Clevises.