National Item Identification Number
National Stock Number
Federal Supply Class
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)
SIEMENS DEMAG DELAVAL TURBOMACHINERY
840 NOTTINGHAM WAY
IMO INDUSTRIES INC.
DBA IMO PUMP DIVISION DIV IMO PUMP
1710 AIRPORT RD
Reference Numbers (Part Numbers)
MATERIAL DOCUMENT AND CLASSIFICATION
STEEL COMP 2 OVERALL
MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL