Part Number
Definition:
A NUT, CIRCULAR IN SHAPE, WHICH MAY HAVE WRENCHING FACILITIES SUCH AS FLATS, HOLES, PROTRUSIONS, SLOTS OR SPLINES IN OR ON THE PERIPHERY OR IN THE FACE OPPOSITE THE BEARING SURFACE. FOR ITEMS HAVING A THICKNESS (OR HEIGHT) EXCEEDING TWO TIMES THE OUTSIDE DIAMETER, USE POST, ELECTRICAL-MECHANICAL EQUIPMENT. SEE ALSO NUT (1), PLAIN, KNURLED. (WHEN HEIGHT OR THICKNESS AND/OR OUTSIDE DIAMETER IS DESIGNATED AS A TOLERANCE DIMENSION, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE.)
CAGE Information
| Code | Company |
|---|---|
| 78286 | SIKORSKY AIRCRAFT 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 |
|---|---|---|
| ABPH | SMALL END DIAMETER | 2.188 INCHES NOMINAL |
| ADBJ | UNDERCUT THICKNESS | 0.375 INCHES NOMINAL |
| ACTD | NUT DIAMETER | 2.375 INCHES NOMINAL |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| ALET | HOLE TYPE AND QUANTITY | 4 DRILLED |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-267,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CRHC | HOLE CONFIGURATION STYLE | CONFIGURATION J |
| AAJD | THREAD CLASS | 3B |
| SFTT | SURFACE TREATMENT | ANODIZE OVERALL AND CHROMATE ZINC OVERALL |
| AGGP | DRILLED HOLE DIAMETER | 0.062 INCHES NOMINAL |
| ADBM | DRIVE POINT QUANTITY | 8 |
| CQJX | NOMINAL THREAD SIZE | 1.938 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| BZRR | THREAD SERIES | UN |
| ADBG | NUT THICKNESS | 0.375 INCHES NOMINAL |
| ACTA | NUT STYLE | ROUND |
| ADBH | DRIVE POINT WIDTH | 0.250 INCHES NOMINAL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MTL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OVERALL AND TT-P-1757 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| ABQU | DRIVE POINT DEPTH | 0.167 INCHES NOMINAL |
| CRSQ | COUNTERSINK ANGLE | 20.0 DEGREES NOMINAL NUT |