5310-00-209-4012, WASHER,FLAT

National Stock Number:
5310-00-209-4012

Federal Supply Class:
5310

National Item Identification Number:
002094012

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:

342930-4	98897	LOCKHEED MARTIN CORP
FFW92A	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC

Techincal Specification:

MATERIAL	STEEL COMP 8630 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6050,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLE	ROUND
HOLE DIAMETER	0.378 INCHES MINIMUM AND
	0.388 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE	ROUND
OVERALL DIAMETER	0.8025 INCHES MINIMUM AND
	0.8225 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
THICKNESS	0.100 INCHES MINIMUM AND
	0.110 INCHES MAXIMUM
HARDNESS RATING	27.0 ROCKWELL C MINIMUM AND
	33.0 ROCKWELL C MAXIMUM
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FFW92A
THE MANUFACTURERS DATA
MANUFACTURERS CODE	98897
DESIGN CONTROL REFERENCE	342930-4

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