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 |
|---|---|
| 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC |
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 | 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| ABQU | DRIVE POINT DEPTH | 0.125 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 4140 OVERALL |
| BZRR | THREAD SERIES | UNS |
| CRSQ | COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL BOTH ENDS |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | EPB 4-230, C0DE 31, CAGEC 02731 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| ADBM | DRIVE POINT QUANTITY | 21 |
| CQJX | NOMINAL THREAD SIZE | 1.173 INCHES |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| AAJD | THREAD CLASS | 3B |
| AZKQ | TEMP RATING | NOT RATED |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626, COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| ACTD | NUT DIAMETER | 1.850 INCHES MINIMUM AND 1.870 INCHES MAXIMUM |
| ADBH | DRIVE POINT WIDTH | ANY ACCEPTABLE |
| SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
| ACTA | NUT STYLE | ROUND |
| ADBG | NUT THICKNESS | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| ABPH | SMALL END DIAMETER | 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 13 |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |