Part Number
Definition:
A NUT, CIRCULAR IN SHAPE, WHICH MAY HAVE WRENCHING FACILITIES SUCH AS FLATS, HOLES, PROTUSIONS, SLOTS OR SPLINES IN OR ON THE PERIPHERY OR IN THE FACE OPPOSITE THE BEARING SURFACE. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. DO NOT USE IF A MORE SPECIFIC ITEM NAME APPLIES. EXCLUDES COLLAR, PIN-RIVET, THREADED; INSERT, SCREW THREAD; NUT (1), SLEEVE; NUT(1), PLAIN, CAP; AND TURNBUCKLE BODY.
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 |
|---|---|---|
| ABQU | DRIVE POINT DEPTH | 0.250 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 4340 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE THREADS |
| SFTT | SURFACE TREATMENT | SILVER THREADS |
| AAUM | LOCKING FEATURE | ANY ACCEPTABLE |
| AAJF | THREAD DIRECTION | LEFT-HAND |
| AAJD | THREAD CLASS | 3B |
| AZKQ | TEMP RATING | NOT RATED |
| ADBM | DRIVE POINT QUANTITY | 8 |
| ACTD | NUT DIAMETER | 3.781 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| BZRR | THREAD SERIES | UN |
| CQJX | NOMINAL THREAD SIZE | 3.125 INCHES |
| ACTA | NUT STYLE | ROUND |
| ADBH | DRIVE POINT WIDTH | 0.250 INCHES NOMINAL |
| ADBG | NUT THICKNESS | 0.600 INCHES NOMINAL |