5310-01-597-1840, WASHER,FLAT

5310-01-597-2075 WASHER,SPRING TENSION

National Stock Number:
5310-01-597-1840

Federal Supply Class:
5310

National Item Identification Number:
015971840

Description:
WASHER,FLAT

Detail:
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Manufacturer Information:

MA3453-120	0U583	SAE INTERNATIONAL
MA3453-120	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC

Techincal Specification:

MATERIAL	STEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS-5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MA1784 FED STD SINGLE TREATMENT RESPONSE OVERALL
CENTER HOLE SHAPE STYLE	ROUND
HOLE DIAMETER	13.3 MILLIMETERS MINIMUM AND
	13.5 MILLIMETERS MAXIMUM
PERIPHERAL SHAPE STYLE	ROUND
OVERALL DIAMETER	20.5 MILLIMETERS MINIMUM AND
	21.0 MILLIMETERS MAXIMUM
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
THICKNESS	2.3 MILLIMETERS MINIMUM AND
	2.7 MILLIMETERS MAXIMUM
HARDNESS RATING	24.0 ROCKWELL C MINIMUM AND
	35.0 ROCKWELL C MAXIMUM OR
	247.0 ROCKWELL B MINIMUM AND
	327.0 ROCKWELL B MAXIMUM
SPECIAL FEATURES	PRECIPITATION HEAT TREAT PER AMS-2759/3; HARDNESS ALSO 260-345 HV
PART NAME ASSIGNED BY CONTROLLING AGENCY	WASHER, FLAT, AMS-5525, METRIC

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