National Item Identification Number
01-531-7276
National Stock Number
Item Name
WASHER,FLAT
Federal Supply Class
5310
Description
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.
Commercial and Government Entity Code (Supplier Data)
8T865
ALBANY NUT AND BOLT CO INC
107-B FLINT AVE
ALBANY
GA
31701
229-436-5958
05047
AMERICAN SOCIETY OF MECHANICAL
ENGINEERS THE INC
3 PARK AVE FL 21
NEW YORK
NY
10016
800-843-2763
Reference Numbers (Part Numbers)
WFMT0800USS
W221NAAW050HN436ANMA1
Required Categories
MATERIAL
HOLE DIAMETER
OVERALL DIAMETER
THICKNESS
III END ITEM IDENTIFICATIO
Required Description
STEEL OVERALL
0.530 INCHES NOMINAL
1.370 INCHES NOMINAL
0.180 INCHES NOMINAL;