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 |
|---|---|---|
| BZRR | THREAD SERIES | UNEF |
| ABPH | SMALL END DIAMETER | 1.750 INCHES NOMINAL |
| ABKU | FLANGE THICKNESS | 0.138 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| ADBG | NUT THICKNESS | 0.281 INCHES NOMINAL |
| ADBH | DRIVE POINT WIDTH | 0.178 INCHES NOMINAL |
| ADBJ | UNDERCUT THICKNESS | 0.062 INCHES NOMINAL |
| ACTD | NUT DIAMETER | 1.875 INCHES NOMINAL |
| CRHC | HOLE CONFIGURATION STYLE | CONFIGURATION F |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AGGP | DRILLED HOLE DIAMETER | 0.067 INCHES NOMINAL |
| CQJX | NOMINAL THREAD SIZE | 1.312 INCHES |
| ALET | HOLE TYPE AND QUANTITY | 8 DRILLED |
| AAJD | THREAD CLASS | 3B |
| AZKQ | TEMP RATING | NOT RATED |
| ADBM | DRIVE POINT QUANTITY | 8 |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL |
| ACTA | NUT STYLE | ROUND |
| ABQU | DRIVE POINT DEPTH | 0.093 INCHES NOMINAL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |