National Item Identification Number
00-088-6470
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)
28968
28968
28968
05616
COSMO CORPORATION
30201 AURORA RD
SOLON
OH
44139
440-498-7500
28968
96169
28968
09691
L-3 COMMUNICATIONS ELECTRONIC
SYSTEMS INC
25 CITYVIEW DR
TORONTO
M9W 5A7
CANADA
416-249-1231
24617
Reference Numbers (Part Numbers)
A4305PC9
A5783PC270-8
M2166
251TC
2620-906PC33
2620-906PC33
328.23
786463
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
PLASTIC POLYAMIDE OVERALL
0.250 INCHES NOMINAL
1 ROUND
0.500 INCHES NOMINAL;