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WASHER , CONCAVE

Definition:

A WASHER WHICH IS ROUND WITH A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS SMOOTH, FLAT, AND UNBROKEN, THE OTHER BEARING SURFACE IS SMOOTH, UNBROKEN, AND IS RECESSED TO FORM A CURVED OR SPHERICAL CONTOUR. SEE ALSO WASHER (1), CONVEX. EXCLUDES WASHER (1), RECESSED AND BEARING, WASHER, THRUST.

CAGE Information

Code Company
15653 ALCOA GLOBAL FASTENERS INC.

Federal Supply Class

Title

NUTS AND WASHERS

Inclusions:

INCLUDES LOCKNUTS; EYE NUTS; PLAIN NUTS; CASTELLATED NUTS; WING NUTS; PLATE NUTS; PUSH ON NUTS; CONCAVE AND CONVEX WASHERS; FLAT WASHERS; KEYED WASHERS; LOCK WASHERS; SHOULDERED WASHERS; SPLIT WASHERS.

Exclusions:

EXCLUDES BEARING THRUST WASHERS (FSC 3120); SHIMS (FSC 5365); RING SPACERS (FSC 5365); PLATE SPACERS (FSC 5365); LOCK RINGS (FSC 5365).

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
STYL STYLE DESIGNATOR CONCAVE
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATT MATERIAL STEEL CORROSION RESISTING OVERALL
ABGG RADIUS 0.435 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
AAUB HOLE DIAMETER 0.531 INCHES MINIMUM AND 0.537 INCHES MAXIMUM
ABMH RECESS DEPTH 0.094 INCHES MINIMUM AND 0.104 INCHES MAXIMUM
FEAT SPECIAL FEATURES DRY FILM AND CETYL ALCOHOL LUBRICATION
ABPX MATERIAL THICKNESS 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
ABKV OUTSIDE DIAMETER 0.780 INCHES MINIMUM AND 0.790 INCHES MAXIMUM
ZZZK SPECIFICATION/STANDARD DATA 76301-ST3-469 MANUFACTURERS STANDARD
SFTT SURFACE TREATMENT PASSIVATE OVERALL

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