ASME B18.31.1M Metric Continous Thread Studs Dimensions Standards

ASME B18.31.1M Metric Continous Thread Studs Dimensions Drawings

ASME B18.31.1M Metric Continous Thread Studs Dimensions (mm)

Nominal Size Diameter, D Pitch, P Umax = 2P Nominal Length, LT
Range Increments
M5 0.8 1.6 12 - 20 4
25 - 50 5
60 - 160 10
≥ 180 20
M6 1 2.0 16 - 20 4
25 - 50 5
60 - 160 10
≥ 180 20
M8 1.25 2.5 25 - 50 5
60 - 160 10
≥ 180 20
M10 1.5 3.0 30 - 50 5
60 - 160 10
> 180 20
M12 1.75 3.5 40 - 50 5
60 - 160 10
≥ 180 20
M14 2 4.0 60 - 160 10
≥ 180 20
M16 2 4.0 60 - 160 10
≥ 180 20
M20 2.5 5.0 60 - 160 10
≥ 180 20
M22 2.5 5.0 60 - 160 10
≥ 180 20
M24 3 6.0 70 - 160 10
≥ 180 20
M27 3 6.0 80 - 160 10
≥ 180 20
M30 3.5 7.0 90 - 160 10
≥ 180 20
M36 4 8.0 110 - 160 10
≥ 180 20
M42 4.5 9.0 120 - 160 10
≥ 180 20
M48 5 10.0 150 - 160 10
≥ 180 20
M56 5.5 11.0 ≥ 180 20
M64 6 12.0 ≥ 180 20
M72 6 12 ≥ 200 20
M80 6 12 ≥ 200 20
M90 6 12 ≥ 200 20
M100 6 12 ≥ 200 20

ASME B18.31.1M Metric Continous Thread Studs Length Tolerance (mm)

Nominal Length Tolerance
Over Through
6 10 ± 0.45
10 18 ± 0.55
18 30 ± 0.65
30 50 ± 0.80
50 80 ± 1.50
80 120 ± 1.75
120 180 ± 2.00
180 250 ± 2.30
250 315 ± 2.60
315 400 ± 2.85
400 500 ± 3.15
>500 ... ± 10.00