ASME B18.31.1M Metric Continous Thread, Double End Reduced and Full Body Studs

ASME B18.31.1M Clamping Type Studs

ASME B18.31.1M Metric Continous Thread, Double End Reduced and Full Body Studs

Nominal Size Thread Length, B [Note (2)] Nominal Length, LT [Note (3)]
Diameter, D [Note (4)] Pitch, P LT ≤ 250 250 < LT ≤ 400 LT > 400 Umax p 2P
Min. Max. Min. Max. Min. Max. Range Increments
M1.6 0.35 9.2 9.9 ... ... ... ... 0.7 25-50 5
M2 0.4 10 10.8 ... ... ... ... 0.8 25-50 5
M2.5 0.45 11 11.9 ... ... ... ... 0.9 30-50 5
M3 0.5 12 13 ... ... ... ... 1 30-50 5
M4 0.7 14 15.4 ... ... ... ... 1.4 35-90 5
M5 0.8 16 17.6 ... ... ... ... 1.6 40-90 5
M6 1 18 20 24 26 ... ... 2 50-90 5
100-160 10
M8 1.25 18 20.5 24 26.5 ... ... 2.5 50-90 5
100-160 10
≥ 180 20
M10 1.5 26 29 32 35 45 48 3 60-160 10
≥ 180 20
M12 1.75 30 33.5 36 39.5 49 52.5 3.5 60-160 10
≥ 180 20
M14 [Note (5)] 2 34 38 40 44 53 57 4 80-160 10
≥ 180 20
M16 2 38 42 44 48 57 61 4 90-160 10
≥ 180 20
M20 2.5 46 51 52 57 65 70 5 100-160 10
≥ 180 20
M24 3 54 60 60 66 73 79 6 130-160 10
≥ 180 20
M30 3.5 66 73 72 79 85 92 7 150-160 10
≥ 180 20
M36 4 78 86 84 92 97 105 8 ≥ 200 20
M42 4.5 90 99 96 105 109 118 9 ≥ 240 20
M48 5 ... ... 108 118 121 131 10 ≥ 280 20
M56 5.5 ... ... 124 135 137 148 11 ≥ 300 20
M64 6 ... ... 140 152 153 165 12 ≥340 20
M72 6 ... ... 156 168 169 181 12 ≥380 20
M80 6 ... ... 172 184 185 197 12 ≥400 20
M90 6 ... ... ... ... 205 217 12 ≥440 20
M100 6 ... ... ... ... 225 237 12 ≥480 20

ASME B18.31.1M Tap End Studs

ASME B18.31.1M Metric Continous Thread, Double End Reduced and Full Body Studs


Nominal Size Tap End  Length  BM Thread Length, B [Note (2)] Nominal Length, L  [Note (3)]
Diameter, D [Note (4)] Pitch, P L ≤ 125 125 < L ≤ 200 L > 200 Umax p 2P
Min. Max. Min. Max. Min. Max. Range Increments
M1.6 0.35 2.1-2.7 9.2 9.9 ... ... ... ... 0.7 25-50 5
M2 0.4 2.7-3.3 10 10.8 ... ... ... ... 0.8 25-50 5
M2.5 0.45 3.375-4.125 11 11.9 ... ... ... ... 0.9 30-50 5
M3 0.5 4.125-4.875 12 13 ... ... ... ... 1 30-50 5
M4 0.7 5.625-6.375 14 15.4 ... ... ... ... 1.4 35-90 5
M5 0.8 7.05-7.95 16 17.6 ... ... ... ... 1.6 40-90 5
M6 1 8.55-9.45 18 20 24 26 ... ... 2 50-90 5
100-160 10
M8 1.25 11.45-12.55 18 20.5 24 26.5 ... ... 2.5 50-90 5
100-160 10
≥ 180 20
M10 1.5 14.45-15.55 26 29 32 35 45 48 3 60-160 10
≥ 180 20
M12 1.75 17.45-18.55 30 33.5 36 39.5 49 52.5 3.5 60-160 10
≥ 180 20
M14 [Note (5)] 2 20.35-21.65 34 38 40 44 53 57 4 80-160 10
≥ 180 20
M16 2 23.35-30.65 38 42 44 48 57 61 4 90-160 10
≥ 180 20
M20 2.5 29.35-30.65 46 56 52 57 65 70 5 100-160 10
≥ 180 20
M24 3 35.2-36.8 54 60 60 66 73 79 6 130-160 10
≥ 180 20
M30 3.5 43.75-46.25 66 73 72 79 85 92 7 150-160 10
≥ 180 20
M36 4 52.5-55.5 78 86 84 92 97 105 8 ≥ 200 20
M42 4.5 61.5-64.5 90 99 96 105 109 118 9 ≥ 240 20
M48 5 70.5-73.5 ... ... 108 118 121 131 10 ≥ 280 20
M56 5.5 82.25-85.75 ... ... 124 135 137 148 11 ≥ 300 20
M64 6 94.5-97.5 ... ... 140 152 153 165 12 ≥340 20
M72 6 106.5-109.5 ... ... 156 168 169 181 12 ≥380 20
M80 6 118.5-121.5 ... ... 172 184 185 197 12 ≥400 20
M90 6 133-137 ... ... ... ... 205 217 12 ≥440 20
M100 6 148-152 ... ... ... ... 225 237 12 ≥480 20