National Item Identification Number
00-080-9253
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)
81343
81343
81346
AMERICAN SOC FOR TSTG & MTLS
DBA ASTM INTERNATIONAL
100 BARR HARBOR DR
WEST CONSHOHOCKEN
PA
19428
610-832-9500
03538
LOCKHEED MARTIN CORPORATION
DBA MS2 DIV MARITIME SYSTEMS &
497 ELECTRONICS PKWY 5 BLD
LIVERPOOL
NY
13088
315-456-2622
24446
81343
Reference Numbers (Part Numbers)
AMS-QQ-P-416
AMS-QQ-P-416 TY2 CL3
ASTM B121/B121M UNS-C33500 ANNEA
N0401P0000
Required Categories
MATERIAL
SURFACE TREATMENT
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAM
Required Description
COPPER ALLOY OVERALL
CADMIUM OVERALL
0.188 INCHES NOMINAL
1 ROUND
0.375 INCH