5310-01-269-3729, WASHER,FLAT

National Stock Number:
5310-01-269-3729

Federal Supply Class:
5310

National Item Identification Number:
012693729

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:

5716-61-51T	86928	SEASTROM MANUFACTURING CO INC
C5122048-2	57957	US ARMY ELECTRONIC WARFARE LABORATORY SEE CAGE CODE 80063
C5122048-2	80063	US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM
OVERALL DIAMETER	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-576,1/2 HARD FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL	COPPER ALLOY 102 OR COPPER ALLOY 104 OR COPPER ALLOY 105 OR COPPER ALLOY 107 OR COPPER ALLOY 110 OR COPPER ALLOY 113 OR COPPER ALLOY 116 OR COPPER ALLOY 120 OR COPPER ALLOY 121 OR COPPER ALLOY 122 OR COPPER ALLOY 123 OR COPPER ALLOY 125 OR COPPER ALLOY 127 OR COPPER ALLOY 128 OR COPPER ALLOY 130 OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B545 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	TIN OVERALL
THICKNESS	0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM

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