5310-01-081-5062, WASHER,FLAT

National Stock Number:
5310-01-081-5062

Federal Supply Class:
5310

National Item Identification Number:
010815062

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:

ST4M203-6

76301

THE BOEING COMPANY

Techincal Specification:

MATERIAL	STEEL COMP 4130 OR
	STEEL COMP 4135 OR
	STEEL COMP 8630 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR
	MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE AND
	MIL-S-18733 MIL SPEC 2ND MATERIAL RESPONSE AND
	MIL-S-18728 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-8837 TYPE II CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CENTER HOLE SHAPE STYLE	ROUND
HOLE DIAMETER	0.390 INCHES NOMINAL
PERIPHERAL SHAPE STYLE	ROUND
OVERALL DIAMETER	0.625 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
THICKNESS	0.032 INCHES NOMINAL
COLOR	BLUE OVERALL
HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND
	44.0 ROCKWELL C MAXIMUM
THE MANUFACTURERS DATA
MANUFACTURERS CODE	76301
DESIGN CONTROL REFERENCE	ST4M203-6

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