All washers manufactured by Superior Washer Co. Chemicals and physicals showing full conformance to the appropriate specification are available on all sizes.
MS-AN-NAS Flat Washers:
Material to procurement spec FF-W-92.
Passivated to QQ-P-35 or ASTM A380.
Dimensions, concentricity to procurement spec FF-W-92.
Magnetic permeability to procurement spec FF-W-92.