Metric External Threads

ASME B 1.13M-2005 (External)
Thread Size Thread Pitch Major Diameter Pitch Diameter UNR Minor
Dia. Max. (Ref.)
Minimum Maximum Minimum Maximum
M3.5-6g 0.6 3.479 3.354 3.089 3.004 2.829
M4-6g 0.7 3.978 3.838 3.523 3.433 3.220
M5-6g 0.8 4.976 4.826 4.456 4.361 4.110
M6-6g 1 5.974 5.794 5.324 5.212 4.891
M8-6g 1.25 7.972 7.760 7.160 7.042 6.619
M10-6g 1.5 9.968 9.732 8.994 8.862 8.344
M12-6g 1.75 11.966 11.701 10.829 10.679 10.072

Metric Internal Threads

ASME B 1.13M-2005 (Internal)
Thread Size Thread Pitch Minor Diameter Pitch Diameter Major
Diameter
Minimum Maximum Minimum Maximum Maximum
M3.5-6H 0.6 2.850 3.010 3.110 3.222 3.699
M4-6H 0.7 3.242 3.422 3.545 3.663 4.219
M5-6H 0.8 4.134 4.334 4.480 4.605 5.240
M6-6H 1 4.917 5.153 5.350 5.500 6.294
M8-6H 1.25 6.647 6.912 7.188 7.348 8.340
M10-6g 1.5 8.376 8.676 9.026 9.206 10.396
M12-6H 1.75 10.106 10.441 10.863 11.063 12.453