National Item Identification Number
00-350-5077
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)
57526
57526
19207
Reference Numbers (Part Numbers)
360550S7
360550S7
360550S8
360550S8
7058731
Required Categories
SURFACE TREATMENT
HARDNESS RATING
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERA
Required Description
CADMIUM OR
ZINC OVERALL
75.0 ROCKWELL C MINIMUM AND
85.0 ROCKWELL C MAXIMUM;