National Item Identification Number
01-496-8259
National Stock Number
Item Name
WASHER,FLAT
Federal Supply Class
5310
Referenced on: http://www.tpub.com/content/bridges/TM-5-1940-322-24P/TM-5-1940-322-24P0249.htm
Referenced on: http://www.tpub.com/content/bridges/TM-5-1940-322-24P/TM-5-1940-322-24P0270.htmDescription
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)
3A054
MCMASTER-CARR SUPPLY COMPANY
9630 NORWALK BLVD.
SANTA FE SPRINGS
CA
90670
562-695-2449
3AA78
LUMINESCENT SYSTEMS INC
55 RUE LINDSAY
DORVAL
H9P 2S6
CANADA
514-636-9921
NSN (National Stock Number) 5310-01-496-8259, 5310014968259 NIIN (National Identification Number) 01-496-8259, 014968259
Part Numbers (Reference Numbers)
90945A712
99-200-365-000
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
STEEL COMP 302 OVERALL
0.128 INCHES NOMINAL
1 ROUND
0.238 INCHES NOMINAL
1 R