5305-00-680-6731 SCREW,CAP,SOCKET HEAD Index 5310-00-680-6740 NUT,PLAIN,ROUND

National Stock Number:
5310-00-680-6737

Federal Supply Class:
5310

National Item Identification Number:
006806737

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:
2057-159405030RAYTHEON CO MISSILE SYSTEMS DIV LOWELL PLANT
2057-15943B150RAYTHEON COMPANY
2057-159449956RAYTHEON COMPANY
2057-159454X10RAYTHEON COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.316 INCHES NOMINAL
OVERALL DIAMETER0.437 INCHES NOMINAL
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.0445 INCHES MINIMUM AND 0.0495 INCHES MAXIMUM


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