5310-00-091-5048 WASHER,FLAT Index 5305-00-091-5053 SCREW,CLOSE TOLERANCE

National Stock Number:
5310-00-091-5049

Federal Supply Class:
5310

National Item Identification Number:
000915049

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:
1603660-20399251MISSION SYSTEMS DAVENPORT INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM
OVERALL DIAMETER0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 COND A OR H MIL SPEC 1ST MATERIAL RESPONSE AND ASTM A582 COND A ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 301 OR STEEL COMP 303 OR STEEL COMP 303SE OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM


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