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 | 2.875 INCHES |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| ABQU | DRIVE POINT DEPTH | 0.094 INCHES NOMINAL |
| ABKU | FLANGE THICKNESS | 0.199 INCHES NOMINAL |
| CRSQ | COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL BOTH ENDS |
| ADBG | NUT THICKNESS | 0.344 INCHES NOMINAL |
| CRHC | HOLE CONFIGURATION STYLE | CONFIGURATION F |
| ADBJ | UNDERCUT THICKNESS | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AGGP | DRILLED HOLE DIAMETER | 0.067 INCHES NOMINAL |
| 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 |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| BZRR | THREAD SERIES | UN |
| SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
| ACTA | NUT STYLE | ROUND |
| ADBH | DRIVE POINT WIDTH | 0.250 INCHES NOMINAL |
| ACTD | NUT DIAMETER | 3.355 INCHES NOMINAL |