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 |
|---|---|
| 98897 | LOCKHEED MARTIN CORPORATION DBA LOCK |
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 |
|---|---|---|
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| CQFM | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| CSTM | RECESS ANGLE | 44.0 DEGREES MINIMUM AND 46.0 DEGREES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM |
| AAUB | HOLE DIAMETER | 0.280 INCHES MINIMUM AND 0.285 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.481 INCHES MINIMUM AND 0.491 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESS |
| AGAV | END ITEM IDENTIFICATION | C-5 AIRCRAFT |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |