1 Scope
This Standard specifies the full range of the nominal dimensions of product Grade A and Grade C plain washers for general-purpose bolts, screws and nuts of nominal thread diameters ranging from 1 mm to 150 mm inclusive.
This Standard is not applicable to washers for screw and washer assemblies in relation to hole diameters and thicknesses.
Information on the use of plain washers is given in Appendix A (Informative).
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB/T 95-1985 Plain Washers — Product Grade C (eqv ISO 7091:1983)
GB/T 96-1985 Plain Washers — Large Series — Product Grades A and C (eqv ISO 7093:1983)
GB/T 97.1-1985 Plain Washers — Normal Series — Product Grade A (eqv ISO 7089:1983)
GB/T 97.2-1985 Plain Washers — Chamfered — Normal Series — Product Grade A (eqv ISO 7090:1983)
GB/T 848-1985 Plain Washers — Small Series — Product Grade A (eqv ISO 7092:1983)
GB/T 3103.3-2000 Tolerances for Fasteners — Plain Washers (idt ISO 4759-3:2000)
GB/T 5277-1985 Fasteners — Clearance Holes for Bolts and Screws (eqv ISO 273:1979)
GB/T 5287-1985 Plain Washers — Extra Large Series — Product Grade C (eqv ISO 7094:1983)
3 Clearance Holes
