National Item Identification Number
01-509-6341
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)
28953
RIX INDUSTRIES
4900 INDUSTRIAL WAY
BENICIA
CA
94510
707-747-5900
28953
RIX INDUSTRIES
4900 INDUSTRIAL WAY
BENICIA
CA
94510
707-747-5900
3A054
MCMASTER-CARR SUPPLY COMPANY
9630 NORWALK BLVD.
SANTA FE SPRINGS
CA
90670
562-695-2449
Reference Numbers (Part Numbers)
20-30115
77-35290 ITEM 6
91166A270
Required Categories
MATERIAL
SURFACE TREATMENT
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAM
Required Description
STEEL OVERALL
ZINC OVERALL
8.4 MILLIMETERS NOMINAL
1 ROUND
16.0 MILLIMETERS