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 | 1.967 INCHES |
| MATT | MATERIAL | STEEL COMP 4140 OVERALL |
| BZRR | THREAD SERIES | UNS |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6381 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| ACTD | NUT DIAMETER | 2.485 INCHES MINIMUM AND 2.505 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CRHC | HOLE CONFIGURATION STYLE | CONFIGURATION F |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAJE | THREAD PITCH DIAMETERS | +1.9309/+1.9354 INCHES |
| AGGP | DRILLED HOLE DIAMETER | 0.067 INCHES NOMINAL |
| ALET | HOLE TYPE AND QUANTITY | 8 DRILLED |
| AZKQ | TEMP RATING | NOT RATED |
| ADBM | DRIVE POINT QUANTITY | 8 |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
| ACTA | NUT STYLE | ROUND |
| ADBH | DRIVE POINT WIDTH | 0.250 INCHES NOMINAL |
| ABQU | DRIVE POINT DEPTH | 0.093 INCHES NOMINAL |
| ADBG | NUT THICKNESS | 0.312 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | HOLES ARE DRILLED THRU CENTER OF DRIVE POINTS |