5310-00-438-2928 WASHER,FLAT Index 5360-00-438-2930 SPRING,HELICAL,COMPRESSION

National Stock Number:
5310-00-438-2929

Federal Supply Class:
5310

National Item Identification Number:
004382929

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:
1788191-110001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
MATERIALSTEEL COMP 1020 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.626 INCHES MINIMUM AND
0.632 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.240 INCHES MINIMUM AND
1.260 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.182 INCHES MINIMUM AND
0.188 INCHES MAXIMUM
FEATURES PROVIDEDCASEHARDENED
SPECIAL FEATURESDRY FILM LUBRICATE ALL OVER IN ACCORDANCE WITH MIL-L-8937
THE MANUFACTURERS DATA
MANUFACTURERS CODE10001
DESIGN CONTROL REFERENCE1788191-1


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