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 |
|---|---|---|
| ADBJ | UNDERCUT THICKNESS | 0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| BZRR | THREAD SERIES | UNS |
| ABPH | SMALL END DIAMETER | 1.163 INCHES MINIMUM AND 1.168 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AAJE | THREAD PITCH DIAMETERS | +0.9487/+0.9521 INCHES |
| AAJF | THREAD DIRECTION | LEFT-HAND |
| CRSQ | COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
| ADBG | NUT THICKNESS | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| AZKQ | TEMP RATING | NOT RATED |
| CQJX | NOMINAL THREAD SIZE | 0.969 INCHES |
| ADBM | DRIVE POINT QUANTITY | 8 |
| ADBH | DRIVE POINT WIDTH | 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| ACTA | NUT STYLE | ROUND |
| ABQU | DRIVE POINT DEPTH | 0.055 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| ACTD | NUT DIAMETER | 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM |