(100) 3/4" NAS70-261-750 Flat Washer Cadmium Silver Finish, Made in USA, Military Spec

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Flat Washer

NSN: 5310-00-282-9098 | Model: SP1018
ITAR Registered seal

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 micro inch (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 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.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
Cross Sectional Shape
Hole Diameter
Between 0.256 inches and 0.271 inches
Edge Shape
Center Hole Shape
0.063 inches
Overall Diameter
Between 0.740 inches and 0.760 inches
Material Specification
QQ-S-636-CANCELED federal specification single material response
Surface Treatment
Surface Treatment Specification
QQ-P-416, type 1, cl 3 federal specification single treatment response

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