National Item Identification Number
01-524-4915
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)
3J458
RAYTHEON COMPANY
DIV NMIS
8680 BALBOA AVE.
SAN DIEGO
CA
92123
401-842-2843
3A054
MCMASTER-CARR SUPPLY COMPANY
9630 NORWALK BLVD.
SANTA FE SPRINGS
CA
90670
562-695-2449
Reference Numbers (Part Numbers)
9000103-100 ITEM # 62
90313A109
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
STEEL CORROSION RESISTING OVERALL
0.281 INCHES NOMINAL
1 ROUND
1.500 INCHES N