5310-00-711-0496, WASHER,FLAT

National Stock Number:
5310-00-711-0496

Federal Supply Class:
5310

National Item Identification Number:
007110496

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:

7793216	19200	US ARMY ARDEC RDECOM
7793216	19205	SPRINGFIELD ARMORY

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND W/FLATS
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.290 INCHES MINIMUM AND 0.295 INCHES MAXIMUM
HOLE WIDTH ACROSS FLATS	0.215 INCHES MINIMUM AND 0.220 INCHES MAXIMUM
OUTSIDE LEFT CORNER CHAMFER ANGLE	45.0 DEGREES NOMINAL
OVERALL DIAMETER	0.520 INCHES MINIMUM AND 0.525 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A322 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 4130 OR STEEL COMP 4140 OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DOD-P-16232, TY M, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OR DOD-P-16232, TY Z, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE OVERALL
THICKNESS	0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM

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