National Item Identification Number
00-143-6907
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)
79500
79500
79500
35301
DRESSER INDUSTRIES INC
LEROI DIV
N MAIN AND RUSSELL RD
90
SIDNEY
OH
45365
937-498-2500
82722
WABTEC TRANSPORTATION TECHNOLOGIES
CORP
1001 AIR BRAKE AVE
WILMERDING
PA
15148
412-825-1666
Reference Numbers (Part Numbers)
C58449-3PC29
C58449-7PC29
C58449-7PC35
H15-604
181768
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
HOLE DIAMETER
PERIPHERAL SHAPE
Required Description
STEEL COMP 420 OVERALL
AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
0.622 IN