5310-00-409-4408, WASHER,FLAT

National Stock Number:
5310-00-409-4408

Federal Supply Class:
5310

National Item Identification Number:
004094408

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:

AN961-1016T	88044	AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
AN961-1016T	D9182	ZF INDUSTRIEANTRIEBE WITTEN GMBH
FFW92	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.630 INCHES MINIMUM AND 0.650 INCHES MAXIMUM
OVERALL DIAMETER	1.183 INCHES MINIMUM AND 1.208 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-B-626 1/2 HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321 1/2 HARD FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL	COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL
NONDEFINITIVE SPEC/STD DATA	A TYPE AND 1 GRADE AND E CLASS
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-T-10727 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	TIN OVERALL
THICKNESS	0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM

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