5305-00-637-9441 SCREW,CAP,HEXAGON HEAD Index 5305-00-637-9459 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5310-00-637-9451

Federal Supply Class:
5310

National Item Identification Number:
006379451

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:
2002-315879343ASRC FEDERAL FACILITIES LOGISTICS, LLC
2002-315893568HARSCO CORP BMY-COMBAT SYSTEMS DIV


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER2.031 INCHES MINIMUM AND 2.041 INCHES MAXIMUM
OVERALL DIAMETER3.125 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1010 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM


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