5310-00-286-0429, WASHER,FLAT

National Stock Number:
5310-00-286-0429

Federal Supply Class:
5310

National Item Identification Number:
002860429

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:

SMB500792

80063

US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR

Techincal Specification:

CENTER HOLE LENGTH	0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE	RECTANGULAR
CENTER HOLE WIDTH	0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-250/8,H32 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	ALUMINUM ALLOY 5052 OVERALL
OVERALL DIAMETER	0.680 INCHES NOMINAL
PERIPHERAL SHAPE STYLE	ROUND
SPECIAL FEATURES	OLIVE DRAB MIL-STD-795 COLOR NO. X24087
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE AND PRIMER TT-P-1757 FED SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
THICKNESS	0.052 INCHES MINIMUM AND 0.062 INCHES MAXIMUM

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