5310-00-841-4831, WASHER,FLAT

National Stock Number:
5310-00-841-4831

Federal Supply Class:
5310

National Item Identification Number:
008414831

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:

LD153-0014-0009	43999	THE BOEING COMPANY
LD153-0014-0009	94756	THE BOEING COMPANY

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM
OVERALL DIAMETER	0.370 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	-QQ-A-318 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	ALUMINUM ALLOY 5052 OVERALL
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	-MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	OXIDE FILM OR ZINC AND CHROMATE OVERALL
THICKNESS	0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM

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