5310-00-478-2879, WASHER,FLAT

5360-00-478-2876 SPRING,HELICAL,COMPRESSION

National Stock Number:
5310-00-478-2879

Federal Supply Class:
5310

National Item Identification Number:
004782879

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:

AN960XC6L	88044	AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
FFW92	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
COLOR	BLACK OVERALL
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.139 INCHES MINIMUM AND 0.159 INCHES MAXIMUM
OVERALL DIAMETER	0.370 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-A-6721 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL CORROSION RESISTING OVERALL
NONDEFINITIVE SPEC/STD DATA	A TYPE AND 1 GRADE AND B CLASS
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	OXIDE FILM OVERALL
THICKNESS	0.006 INCHES MINIMUM AND 0.026 INCHES MAXIMUM

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