Plain & Square Washers

Large Series Plain Washers – Grade A

GB/T 96.1-2002 (reference only)

Nominal size d

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GB/T 96.1-2002 dimension drawing

Dimensions in mm

Standard	Standard body

		Steel		Stainless steel
Material	Group	–		A2, F1, C1, A4, C4
Material	Standard	–		GB/T 3098.6
Mechanical properties	Hardness class	200HV	300HV3)	200HV
Mechanical properties	Hardness range	200HV~300HV	300HV~370HV	200HV~300HV
Tolerances	Product grade	A
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 requirements in accordance with GB/T 5267.1; Non-electrolytically applied zinc flake coating requirements in accordance with GB/T 5267.2; Use a suitable coating or plating process for quenched and tempered washers to avoid hydrogen embrittlement. For electroplated or phosphated washers, apply a suitable hydrogen embrittlement relief treatment immediately after coating; All tolerances apply to dimensions before coating or plating.		Without surface treatment, washers shall have their natural finish.
Surface discontinuities		Components shall be free of irregular or detrimental defects. 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) Applies to chemical composition only ; 3) Quenched and tempered ; 4) Hardness testing in accordance with GB/T 4340.1 Test force: use HV10 for nominal thicknesses 0.6 mm < h ≤ 1.2 mm; Use HV30 for nominal thicknesses h > 1.2 mm.

Large-series plain washers, product grade A. Confirm bore, outside diameter and thickness for the assembly.

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