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 |
|---|---|---|
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, BEARING RETAINING-PLANETARY ASSEMBLY, MAIN GEARBOX |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| ADBG | NUT THICKNESS | 0.435 INCHES MINIMUM AND 0.445 INCHES MAXIMUM |
| CQJX | NOMINAL THREAD SIZE | 4.125 INCHES |
| PMLC | PRECIOUS MATERIAL AND LOCATION | SURFACE SILVER |
| ADBJ | UNDERCUT THICKNESS | 0.060 INCHES NOMINAL |
| CRHC | HOLE CONFIGURATION STYLE | CONFIGURATION F |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAJD | THREAD CLASS | 3B |
| AZKQ | TEMP RATING | NOT RATED |
| MATT | MATERIAL | STEEL OVERALL |
| CQFM | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| BZRR | THREAD SERIES | UNJ |
| ADBM | DRIVE POINT QUANTITY | 9 |
| ACTD | NUT DIAMETER | 4.730 INCHES NOMINAL |
| ADBH | DRIVE POINT WIDTH | 0.375 INCHES NOMINAL |
| ALET | HOLE TYPE AND QUANTITY | 9 DRILLED |
| AGGP | DRILLED HOLE DIAMETER | 0.218 INCHES NOMINAL |
| ACTA | NUT STYLE | ROUND |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SS8487 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| ABQU | DRIVE POINT DEPTH | 0.165 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | SILVER OVERALL |
| ABKU | FLANGE THICKNESS | 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
| AGAV | END ITEM IDENTIFICATION | H60 HELICOPTER |