National Item Identification Number
01-178-7335
National Stock Number
Item Name
WASHER,FLAT
Federal Supply Class
5310
Referenced on: http://constructionmisc.tpub.com//TM-9-4940-568-24P/css/TM-9-4940-568-24P_343.htm
Referenced on: http://constructionmisc.tpub.com//TM-9-4940-568-24P/css/TM-9-4940-568-24P_448.htm
Referenced on: http://constructionmisc.tpub.com//TM-9-4940-568-24P/css/TM-9-4940-568-24P_483.htmDescription
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)
15526
METRIC AND MULTISTANDARD
COMPONENTS CORP
120 OLD SAW MILL RIVER RD
HAWTHORNE
NY
10532
914-769-5020
56161
GENERAL DYNAMICS LAND SYSTEMS
CANADA CORP
1991 OXFORD ST E
LONDON
N5V 2Z7
CANADA
519-964-5900
15526
METRIC AND MULTISTANDARD
COMPONENTS CORP
120 OLD SAW MILL RIVER RD
HAWTHORNE
NY
10532
914-769-5020
NSN (National Stock Number) 5310-01-178-7335, 5310011787335 NIIN (National Identification Number) 01-178-7335, 011787335
Part Numbers (Reference Numbers)
DIN 1440 4
10504186
1440-4
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
STEEL OVERALL
4.0 MILLIMETERS NOMINAL
1 ROUND
8.0 MILLIMETERS NOMINAL
1 ROUN