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Click Specification

Unit:mm

Double End Studs-bm=2d

GB 900 - 1988

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国标GB 900 - 1988 GB900 900GB Double End Studs-bm=2d
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Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
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Choose materials based on density.(g/cm3)

  • Carbon Steel 7.85
  • Stainless Steel 8.1
  • Stainless Steel 7.95
  • Stainless Steel 7.7
  • Titanium Alloy 4.5
  • Aluminum Alloy 2.8
  • Copper 8.89


Select here or enter material density on the calculation page.
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
Thread Size
d
M2 M2.5 M3 M4 M5 M6 M8 M10 M12 (M14) M16
P Pitch
bm Nominal Size
min
max
ds max
min
0.4 0.45 0.5 0.7 0.8 1 1.25 1.5 1.75 2 2
4 5 6 8 10 12 16 20 24 28 32
3.4 4.4 5.4 7.25 9.25 11.1 15.1 18.95 22.95 26.95 30.75
4.6 5.6 6.6 8.75 10.75 12.9 16.9 21.05 25.05 29.05 33.25
2 2.5 3 4 5 6 8 10 12 14 16
1.75 2.25 2.75 3.7 4.7 5.7 7.64 9.64 11.57 13.57 15.57
Weight of per 1000 steel products(≈kg)
- - - - - - - - - - -
Length of Thread b
- - - - - - - - - - -
Thread Size
d
(M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39) M42 M48
P Pitch
bm Nominal Size
min
max
ds max
min
2.5 2.5 2.5 3 3 3.5 3.5 4 4 4.5 5
36 40 44 48 54 60 66 72 78 84 96
34.75 38.75 42.75 46.75 52.5 58.5 64.5 70.5 76.5 82.25 94.25
37.25 41.25 45.25 49.25 55.5 61.5 67.5 73.5 79.5 85.75 97.75
18 20 22 24 27 30 33 36 39 42 48
17.57 19.48 21.48 23.48 26.48 29.48 32.38 35.38 38.38 41.38 47.38
Weight of per 1000 steel products(≈kg)
- - - - - - - - - - -
Length of Thread b
- - - - - - - - - - -
①,P = pitch of coarse thread.  ds ≈ pitch diameter of thread(only for type B)
②,Xmax=2.5P (changed from 1.5P to 2.5P according to Amendment No.1)

Alternative history

GB 900 - 1988

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  • Material: carbon steel, stainless steel; Grade: 4.8, 8.8, 10.9, 12.9; Surface treatment: according to customer requirements; Complete specifications, non-standard customization.
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