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 |
|---|---|---|
| CQJX | NOMINAL THREAD SIZE | 4.000 INCHES |
| CQJX | NOMINAL THREAD SIZE | 4.000 INCHES |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| ABQU | DRIVE POINT DEPTH | 0.125 INCHES NOMINAL |
| ACTD | NUT DIAMETER | 4.500 INCHES NOMINAL |
| BZRR | THREAD SERIES | UNS |
| ADBJ | UNDERCUT THICKNESS | 0.500 INCHES NOMINAL |
| ADBG | NUT THICKNESS | 0.875 INCHES NOMINAL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAJD | THREAD CLASS | 3B |
| AZKQ | TEMP RATING | NOT RATED |
| CQFM | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| ADBM | DRIVE POINT QUANTITY | 6 |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| ABPH | SMALL END DIAMETER | 4.375 INCHES NOMINAL |
| ADBH | DRIVE POINT WIDTH | 0.375 INCHES NOMINAL |
| ACTA | NUT STYLE | ROUND |