National Item Identification Number
00-904-0743
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)
43689
96169
96169
96169
96169
96169
Reference Numbers (Part Numbers)
SS845-2050967 P
205107PC9
2640-402X3PC9
2640-404X3 PIEC
2640-787X3 PIEC
264
Required Categories
MATERIAL
HARDNESS RATING
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMET
Required Description
PLASTIC POLYAMIDE OVERALL
75.0 ROCKWELL M MINIMUM
0.629 INCHES NOMINAL
1 ROUN