National Item Identification Number
01-530-0548
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)
1QYC9
ATLANTIC FASTENERS CO INC
DBA COLLARS AND COUPLINGS
49 HEYWOOD AVE
WEST SPRINGFIELD
MA
01089
413-785-1687
Reference Numbers (Part Numbers)
HH4A075
Required Categories
MATERIAL
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
SPECIAL FEATURES
III END IT
Required Description
STEEL COMP 316 OVERALL
1 ROUND
0.750 INCHES NOMINAL
TYPE A NARROW FLAT WASHER