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 |
|---|---|
| 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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 |
|---|---|---|
| ABKV | OUTSIDE DIAMETER | 1.750 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 1.750 INCHES NOMINAL |
| TEST | TEST DATA DOCUMENT | 81349-MIL-I-6868 SPECIFICATION |
| CQFM | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| HEAT | HEAT TREATMENT | QUENCHED AND TEMPERED |
| FEAT | SPECIAL FEATURES | ONE BEARING SURFACE CHAMFERED 0.125 IN. BY 45 DEG |
| ABPX | MATERIAL THICKNESS | 0.187 INCHES NOMINAL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-8949 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATT | MATERIAL | STEEL OVERALL |
| ABMH | RECESS DEPTH | 0.094 INCHES NOMINAL |
| ABMD | RECESS DIAMETER | 0.604 INCHES MINIMUM AND 0.620 INCHES MAXIMUM |
| STYL | STYLE DESIGNATOR | RECESS |
| ABKW | OVERALL HEIGHT | 0.187 INCHES NOMINAL |
| CSTM | RECESS ANGLE | 90.0 DEGREES NOMINAL |
| AAUB | HOLE DIAMETER | 0.514 INCHES MINIMUM AND 0.523 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |