National Item Identification Number
01-530-2640
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)
2V507
MC MASTER-CARR SUPPLY COMPANY
473 RIDGE RD
DAYTON
NJ
08810
732-329-3200
39428
Reference Numbers (Part Numbers)
98019A315
98019A315
Required Categories
SPECIAL FEATURES
III END ITEM IDENTIFICATION
Required Description
250 PIECES IN EACH PACKAGE
18-8 STAINLESS STEEL MS 15795 FLAT WASHER NUMBER 6 S