GB/T 9074.1-2018 Translated English of Chinese Standard. (GBT 9074.1-2018, GB/T9074.1-2018, GBT9074.1-2018): Bolt or screw and washer assemblies with plain washers
https://www.chinesestandard.net, 18 Mei 2019 - 13 halaman
This Part of GB/T 9074 specifies the type size, technical conditions and marks for bolt or screw and washer assemblies with plain washers. This Part applies to bolt or screw and washer assemblies with plain washers of which the thread specifications are M2~M12, there is a flat bearing surface, the performance levels of bolt or screw are levels 8.8, 9.8 and 10.9, the hardness level of plain washer is 200 HV or 300 HV.
Technical conditions and reference standards
Combination of bolt or screw and washer
Annex A informative Manufacturing method for bolt or screw and washer assemblies with plain washers
5783 and standard according to GB/T assemblies with plain bearing surface bolt or screw bolt with indentation Cap Screws GB/T coil spring lock Committee on Fasteners complies with GB/T conditions and reference contact traces countersunk external toothed Cross recessed hexagon Cross recessed pan Cross recessed small diameter of transition Edition Electroplated eqv ISO external teeth assemblies external toothed lock full thread head screws GB/T Hexagon head bolt lock washer assemblies lock washer external meets GB/T pan head screw plain washer assemblies recessed hexagon bolt recessed pan head recessed small pan reference standards screw and countersunk screw and washer serrated lock washer single coil spring small pan head Small series GB/T spring lock washer surface treatment Table Tapping screw technical conditions toothed lock washer U-type sinking-cutting slot under-head fillet washer and plain washer assembly GB/T washer external teeth washer for assembly washer hardness level washer shall comply Zhejiang