5310-00-055-2867, WASHER,FLAT

National Stock Number:
5310-00-055-2867

Federal Supply Class:
5310

National Item Identification Number:
000552867

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:

FF-W-92B TY A	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MIL-S-18729C	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
VS15306-9	77272	THE BOEING COMPANY

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	0.568 INCHES MINIMUM AND 0.588 INCHES MAXIMUM
OVERALL DIAMETER	0.958 INCHES MINIMUM AND 0.978 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-685-CANC FED SPEC 1ST MATERIAL RESPONSE AND AISI ASSN STD 2ND MATERIAL RESPONSE AND AISI ASSN STD 3RD MATERIAL RESPONSE AND AISI ASSN STD 4TH MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OR STEEL COMP 1095 OR STEEL COMP 1050 OR STEEL COMP 1040 OVERALL
MINIMUM TENSILE STRENGTH	140000 POUNDS PER SQUARE INCH
PERIPHERAL SHAPE STYLE	ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THICKNESS	0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM

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