National Item Identification Number
99-943-4395
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)
K7766
BRITISH STANDARDS INSTITUTION
389 CHISICK HIGH ROAD
LONDON
W4 4AL
UNITED KINGDOM
0208 996 9000
U1269
MINISTRY OF DEFENCE - DEFENCE LOGIST
S ORGANISATION DLO
MONXTON ROAD
ANDOVER
SP11 8HT
UNITED KINGDOM
01264 383456
U1725
MINISTRY OF DEFENCE AIR DOMESTIC R
FERENCE NUMBER USE ONLY
KENTIGERN HOUSE ROOM 2300 65 BROWN
TREET
GLASGOW
G2 8EX
UNITED KINGDOM
0141 224 2207
Reference Numbers (Part Numbers)
BSF64
M3MC7302
29C3891
Required Categories
Required Description