National Item Identification Number
00-253-2218
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)
15434
CUMMINS INC
500 JACKSON ST
COLUMBUS
IN
47201
812-377-7437
83330
91967
ABBATRON LLC
DIV ABBATRON LLC
632 ARCH ST
726
MEADVILLE
PA
16335
814-724-6440
Reference Numbers (Part Numbers)
20828-13
2166
2166
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
PAPER OVERALL
0.250 INCHES NOMINAL
1 ROUND
0.500 INCHES NOMINAL
1 ROUND
1 R