National Item Identification Number
01-020-7156
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)
0HDW7
ALCOA GLOBAL FASTENING SYSTEMS
DBA ALCOA FASTENING SYSTEMS DIV HUCK
3724 E COLUMBIA ST
TUCSON
AZ
85714
805-991-1270
82577
Reference Numbers (Part Numbers)
D791157
D91157
D91157
993336-6
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
SURFACE TREAT
Required Description
STEEL COMP 301 OVERALL
MIL-S-5059 COND H MIL SPEC SINGLE MATERIAL RESPONSE OVER
