5310-00-187-4127, WASHER,FLAT

National Stock Number:
5310-00-187-4127

Federal Supply Class:
5310

National Item Identification Number:
001874127

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:

A8137PC207	93232	CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
FFW92TYPEAGRADE1CLASSB	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
FFW92TYPEAGRADE2CLASSB	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC

Techincal Specification:

MATERIAL	STEEL COMP 301 OR
	STEEL COMP 302 OR
	STEEL COMP 316 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CENTER HOLE SHAPE STYLE	ROUND
HOLE DIAMETER	0.427 INCHES MINIMUM AND
	0.447 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE	ROUND
OVERALL DIAMETER	0.6875 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
THICKNESS	0.062 INCHES NOMINAL
NONDEFINITIVE SPEC/STD DATA	A TYPE AND
	1 GRADE AND
	B CLASS
DEPARTURE FROM CITED DESIGNATOR	AS MODIFIED BY OUTSIDE DIM.
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FFW92TYPEAGRADE1CLASSB
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FFW92TYPEAGRADE2CLASSB

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