National Item Identification Number
01-051-8089
National Stock Number
Item Name
WASHER,FLAT
Federal Supply Class
5310
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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)
D9182
44940
ONAN CORPORATION
DBA CUMMINS POWER GENERATION
1400 73RD AVE NE
MINNEAPOLIS
MN
55432
763-574-5766
NSN (National Stock Number) 5310-01-051-8089, 5310010518089 NIIN (National Identification Number) 01-051-8089, 010518089
Part Numbers (Reference Numbers)
C0526000800
526-0008
Required Categories
MATERIAL
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE S
Required Description
STEEL OVERALL
0.203 INCHES NOMINAL
1 ROUND
0.438 INCHES NOMINAL
1 ROUND
1 R
