Part Number
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 |
|---|---|
| 43999 | BOEING COMPANY THE 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 |
|---|---|---|
| CSYM | SURFACE FINISH | 32.0 MICROINCHES TOP |
| CQBC | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| FEAT | SPECIAL FEATURES | SPHERICAL RADIUS 0.900 IN. MIN 0.910 IN. MAX BOTTOM OF WASHER |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES BOTTOM |
| AAUB | HOLE DIAMETER | 0.760 INCHES MINIMUM AND 0.770 INCHES MAXIMUM |
| CSTM | RECESS ANGLE | 88.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.196 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM |
| STYL | STYLE DESIGNATOR | RECESS |
| ABMD | RECESS DIAMETER | 0.901 INCHES NOMINAL |
| MATT | MATERIAL | NICKEL ALLOY 718 OVERALL |