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NAS1587-7C

Countersunk Washer

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Description

Countersunk Washer

Specifications

Hole Diameter Between 0.441 inches and 0.451 inches
Material CRES
Material Specification Mil-s-6721 military specification all material responses or qq-s-763 federal specification all material responses
Material Thickness 0.078
NIIN 00-279-9083
NSN 5310-00-279-9083
Outside Diameter 0.781
Recess Angle 90.0 degrees
Recess Diameter Between 0.543 inches and 0.557 inches
Specification Data 80205-nas1587 professional/industrial association standard
Style Designator Recessed
Surface Finish 63.0 microinches bottom, 63.0 microinches top
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 federal specification single treatment response

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

Cross-reference

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Catalog data updated 2026-07-05. Report a data error