National Item Identification Number
00-290-1433
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)
19207
81118
EATON CORPORATION
1111 SUPERIOR AVE E
CLEVELAND
OH
44114
216-523-4696
92679
31007
92679
19207
Reference Numbers (Part Numbers)
A331999
A4331999
1070
23977DA
23977DA
23977DB
23977DB
23977DB
5331999
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
LEATHER OVERALL
1.873 INCHES MINIMUM AND
1.883 INCHES MAXIMUM
1 ROUND
2.594