GB/T 3098.13-1996
ActiveMechanical properties of fasteners--Torsional test and minimum torques for bolts and screws with nominal diameters from 1mm to 10mm
紧固件机械性能 螺栓与螺钉的扭矩试验和破坏扭矩公称直径1~10mm
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GB/Z 32564-2016
Nut design guide
GB/Z 41117-2021
Fasteners—Fundamentals of hydrogen embrittlement in steel fasteners
GB/T 959.3-1986
Specifications for ring--Cutting rings
GB/T 959.2-1986
Specifications for ring--Round wire snap rings
GB/T 893.2-1986
Circlips for hole--Type B
GB/T 974-1976
Screws,cross recessed,120° raised countersunkhead
GB/T 973-1976
Screws,cross recessed,oval head
GB/T 3104-1982
Fasteners--Widths across flats of hexagon products