Plain & Square Washers

Extra-Large Plain Washers

GB/T 5287-2002 (reference only)

Nominal size d

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GB/T 5287-2002 dimension drawing

Dimensions in mm

Specification parameters

Equivalent standards

Standard	Standard body

Technical conditions and referenced standards


Material		Steel
Mechanical properties	Hardness class	100HV
Mechanical properties	Hardness range	100HV~200HV
Tolerances	Product grade	C
Tolerances	Standard	GB/T 3103.3
Surface treatment		Without surface treatment, washers shall have their natural finish with rust-preventive oil or a coating agreed between supplier and purchaser; Electroplating Technical requirements in accordance with GB/T 5267.1; Non-electrolytically applied zinc flake coating requirements in accordance with GB/T 5267.2; All tolerances apply to dimensions before coating or plating.
Surface discontinuities		Component Irregular or detrimental defects are not permitted. Washer surfaces shall be free of protruding burrs.
Acceptance inspection and packaging		GB/T 90.1, GB/T 90.2
1) Other metallic materials shall be agreed between supplier and purchaser. 2) Hardness testing in accordance with GB/T 4340.1. Test force: use HV30 for nominal thicknesses h > 1.2 mm.

Product overview

Extra-Large Plain Washers to GB/T 5287-2002. For a quotation, specify the nominal size, any applicable length or thread pitch, material or property class, finish and quantity.