5310-20-005-5801 WASHER,FLAT 5305-20-005-5803 SCREW,CAP,HEXAGON H

National Stock Number:
5310-20-005-5802

Federal Supply Class:
5310

National Item Identification Number:
200055802

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:
90131A1040KVE6MCMASTER-CARR SUPPLY CO
90131A1043A054MCMASTER-CARR SUPPLY CO
HW20021L0782ARMATEC SURVIVABILITY CORP


Techincal Specification:
III PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, RUBBER
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.375 INCHES NOMINAL
THICKNESS0.125 INCHES NOMINAL
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.500 INCHES NOMINAL
MATERIALCOTTON REINFORCED SBR RUBBER


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