Quick Enquiry

ASME B18.31.1M FASTENERS

ASME B18.31.1M FASTENERS


ASME B18.31.1M FASTENERS

ASME B18.31.1M is a standard developed by the American Society of Mechanical Engineers (ASME) that covers the dimensional requirements for metric fasteners. This standard includes specifications for metric screws, bolts, and nuts with threads conforming to the ISO metric screw thread standard (ISO 68-1) and with dimensions based on the International System of Units (SI).

The standard covers a range of sizes for metric fasteners, including M1.6 to M39 for screws and M5 to M39 for bolts and nuts. It also specifies the tolerances and class of fit for the threads and the mechanical and material properties of the fasteners.

ASME B18.31.1M is intended to be used as a reference for the design and specification of metric fasteners in a variety of applications. It is a widely used and internationally recognized standard and is often referenced in the design and procurement of fasteners in a variety of industries.

How It Work?

Laboratory Tested
Quality Assurance
On Time Delivery
Shipping Globally
Best Services


ASME B18.31.1M Clamping Type Studs :-

DIN 976 FASTENERS Dimension
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 :-

DIN 976 FASTENERS Dimension
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

Applications and Uses

  • Chemical Industries
  • Oil & Gas Industrires
  • Power Plant Industries
  • Shipbuilding Industries
  • Fertilizer Industrires
  • Petrochemical Industrires
  • Sugar Industrires
  • Cement Industrires
SPECIAL FASTENERS

FASTENERS

PRODUCTS