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Part Number:
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Item Name:
WASHER , RECESSED

Definition:

A WASHER OF ANY PERIPHERAL SHAPE HAVING A CENTRALLY LOCATED HOLE. BOTH BEARING SURFACES ARE PARALLEL AND FLAT, BUT ONE OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILARLY SHAPED RECESS. THE THICKNESS MUST NOT EXCEED 25 PER CENT OF THE OUTSIDE DIAMETER OR THE LARGEST OUTSIDE DIMENSION. THE MAXIMUM LIMIT OF THE TOLERANCE OR RANGE APPLIED TO THE THICKNESS AND/OR LARGEST OUTSIDE DIMENSION MUST BE USED TO DETERMINE COMPLIANCE. EXCLUDES WASHER, CONCAVE, RETAINER, PACKING, AND THRUST TYPE WASHERS. SEE ALSO SPACER, SLEEVE; AND SPACER, STEPPED.

CAGE Information

Code Company
10630 ANILLO INDUSTRIES INC. DBA ANILLO IN

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
CQFM HARDNESS RATING 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
ABMD RECESS DIAMETER 0.386 INCHES MINIMUM AND 0.396 INCHES MAXIMUM
ABPX MATERIAL THICKNESS 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM
MATT MATERIAL IRON ALLOY 660 OVERALL
AAUB HOLE DIAMETER 0.314 INCHES MINIMUM AND 0.318 INCHES MAXIMUM
STYL STYLE DESIGNATOR RECESS
CSTM RECESS ANGLE 90.0 DEGREES NOMINAL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
ABKV OUTSIDE DIAMETER 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SFTT SURFACE TREATMENT PASSIVATE OVERALL

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