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GB 900 - 1988 Double End Studs-bm=2d


Unit: 毫米(mm)
Weight Calculator
L
Thread Size
d
M2 M2.5 M3
P Pitch
bm Nominal Size
min
max
ds max
min
0.4 0.45 0.5
4 5 6
3.4 4.4 5.4
4.6 5.6 6.6
2 2.5 3
1.75 2.25 2.75
per 1000 units ≈ kg(7.85kg/cm3)
- - -
Thread Length
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 900-1976 GB 900 - 1988
Suppliers
Best price if from GlobalFastener.com
  • Ningbo Taidahezhong Fastener Manufacture Co., Ltd.
  • Contact: Mr.Shen
    Cellphone: +86-13706841945
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    Material: 35CrMo/30CrMo, AISI4140, AISI4145, AISI410/S41000, Cr-Mo-V, AISI1045, AISI304/S30400 AISI316/S31600; Grades: ASTM A193/A193M Gr.B7, B7M, B16, B8, B8A, B8M, B8MA, B6, B8-2, B8M-2, ASMESA-320/SA-320M Gr.L7, L7M, B8, B8A, B8M, B8MA, B8-2, B8M-2, 12.9, 10.9, 8.8, 10, 8.
  • Ningbo SiTuo Fastener Co., Ltd
  • Contact: Petty Cao
    Cellphone: 86-15381997760
    email: silany_1122@163.com
    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.

    I can supply
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