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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
81205 THE BOEING COMPANY DBA BOEING DIV DE

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
ABKV OUTSIDE DIAMETER 0.455 INCHES MINIMUM AND 0.465 INCHES MAXIMUM
MATT MATERIAL STEEL COMP 630 OVERALL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
ABPX MATERIAL THICKNESS 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
ABGG RADIUS 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
CQFM HARDNESS RATING 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
CSYM SURFACE FINISH 32.0 MICROINCHES COUNTERBORE WALL
AAUB HOLE DIAMETER 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SFTT SURFACE TREATMENT PASSIVATE OVERALL

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