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ASTM A320M Stud Bolts-NINGBO BOLT

　

ASTM A320 Studs Specification

 　

ASTM A320 Continuous Stud Bolts

 　 ASTM A320 Double End Stud Bolts 　 ASTM A320 Tap End Stud Bolts

ASTM A320M Stud Bolts

Continuous Thread Studs Tolerance on Length
Nom Stud Size Tolerance on Length, mm
Dia. For Lengths 150 mm and Shorter For Lengths over 150 mm
M6×1 +/- 0.8 +/- 1.5
M8×1.25 +/- 0.8 +/- 1.5
M10×1.5 +/- 1.5 +/- 3.0
M12×1.75 +/- 1.5 +/- 3.0
M14×2 +/- 1.5 +/- 3.0
M16×2 +/- 1.5 +/- 3.0
M20×2.5 +/- 1.5 +/- 3.0
M24×3 +/- 3.0 +/- 4.8
M30×3.5 +/- 3.0 +/- 4.8
M36×4 +/- 3.0 +/- 4.8
M42×4.5 +/- 6.0 +/- 6.0
M48×5 +/- 6.0 +/- 6.0
M56×5.5 +/- 6.0 +/- 6.0
M64×6 +/- 6.0 +/- 6.0
M72×6 +/- 6.0 +/- 6.0
M80×6 +/- 6.0 +/- 6.0
M90×6 +/- 6.0 +/- 6.0
M100×6 +/- 6.0 +/- 6.0

　

Dimensions of Double End Studs
Nom Stud Size & Thread Pitch Body Diameter Nut Ends
E F G F G F G
Type 1 Type 2 Type 3 Type 4 For Studs Up To And Including 125 mm Length   For Studs Over 125 To 200 mm Length   For Studs Over 200 mm Length  
Thread Length Thread Length Thread Length
Full Thread Total Thread Full Thread Total Thread Full Thread Total Thread
Max Min Max Min Max Min Max Min Min Max Min Max Min Max
M6×1 - - 6.00 5.21 6.00 5.79 - - 18 22 24 28 37 41
M8×1.25 - - 8.00 7.04 8.00 7.76 - - 22 27 28 33 41 46
M10×1.5 - - 10.00 8.86 10.00 9.73 - - 26 32 32 38 45 51
M12×1.75 - - 12.00 10.68 12.00 11.70 - - 30 37 36 43 49 56
M14×2 - - 14.00 12.50 14.00 13.68 - - 34 42 40 48 53 61
M16×2 - - 16.00 14.50 16.00 15.68 - - 38 46 44 52 57 65
M20×2.5 - - 20.00 18.17 20.00 19.62 - - 46 56 52 62 65 75
M24×3 - - 24.00 21.80 24.00 23.58 - - - - 60 72 73 85
M30×3.5 - - 30.00 27.46 30.00 29.52 - - - - 72 86 85 99
M36×4 - - 36.00 33.12 36.00 35.46 - - - - - - 97 113
M42×4.5 - - 42.00 38.78 42.00 41.43 - - - - - - 109 127
M48×5 - - 48.00 44.43 48.00 47.40 - - - - - - 121 141
M56×5.5 - - 56.00 52.09 56.00 55.36 - - - - - - 137 159
M64×6 - - 64.00 59.74 64.00 63.32 - - - - - - 153 177
M72×6 - - 72.00 67.74 72.00 71.32 - - - - - - 169 193
M80×6 - - 80.00 75.74 80.00 79.52 - - - - - - 185 209
M90×6 - - 90.00 85.74 90.00 89.32 - - - - - - 205 229
M100×6 - - 100.00 95.74 100.00 99.32 - - - - - - 225 249

　

Type 1 - Unfinished

Type 2 - Finished, Full or Undersize Body

Type 3 - Finished, Full Body

Type 4 - Finished, Close Body

　

Double End Studs Tolerance on Length
Nom Stud Size Tolerance on Length, mm
Dia. For Lengths 150 mm and Shorter For Lengths over 150 mm
M6×1 +/- 0.8 +/- 1.5
M8×1.25 +/- 0.8 +/- 1.5
M10×1.5 +/- 0.8 +/- 1.5
M12×1.75 +/- 0.8 +/- 1.5
M14×2 +/- 1.5 +/- 2.3
M16×2 +/- 1.5 +/- 2.3
M20×2.5 +/- 1.5 +/- 2.3
M24×3 +/- 1.5 +/- 2.3
M30×3.5 +/- 2.3 +/- 3.0
M36×4 +/- 2.3 +/- 3.0
M42×4.5 +/- 3.0 +/- 6.0
M48×5 +/- 3.0 +/- 6.0
M56×5.5 +/- 3.0 +/- 6.0
M64×6 +/- 3.0 +/- 6.0
M72×6 +/- 3.0 +/- 6.0
M80×6 +/- 3.0 +/- 6.0
M90×6 +/- 3.0 +/- 6.0
M100×6 +/- 3.0 +/- 6.0

　
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