5310-00-760-1546 WASHER,FLAT Index 5305-00-760-1549 SCREW,MACHINE

National Stock Number:
5310-00-760-1547

Federal Supply Class:
5310

National Item Identification Number:
007601547

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:
760154719200US ARMY ARDEC RDECOM
P28417564959AMERICAN TELEPHONE AND TELEGRAPH CO
P28417570408AT AND T CORP


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM
OVERALL DIAMETER1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION57612 FSCM 64959 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTZINC AND CHROMATE OVERALL
THICKNESS0.102 INCHES MINIMUM AND 0.122 INCHES MAXIMUM


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