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Item Name:
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 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CQFM HARDNESS RATING 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
ABGG RADIUS 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM
ABPX MATERIAL THICKNESS 0.275 INCHES MINIMUM AND 0.300 INCHES MAXIMUM
ABKV OUTSIDE DIAMETER 1.395 INCHES MINIMUM AND 1.405 INCHES MAXIMUM
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATT MATERIAL STEEL COMP 630 OVERALL OR STEEL COMP 631 OVERALL
SFTT SURFACE TREATMENT PASSIVATE OVERALL
AAUB HOLE DIAMETER 1.005 INCHES MINIMUM AND 1.010 INCHES MAXIMUM

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