Fleet ballistic missile quality, as identified by quality control no poso 912872
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.
Classification: Washers other than lock washers, iron or steel
NSN 6610-00-099-4096
NSN 6240-01-160-7430
NSN 5930-01-554-1834
NSN 5855-01-576-4223
NSN 5999-01-320-4332
NSN 5945-01-214-2446
NSN 5905-01-498-5227
NSN 6645-00-106-0140
NSN 6130-00-337-3415
NSN 6320-01-259-2604
NSN 2925-00-294-4140
NSN 5835-00-174-7763