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 |
|---|---|---|
| MATT | MATERIAL | STEEL COMP 4140 OVERALL |
| BZRR | THREAD SERIES | UNS |
| ACTD | NUT DIAMETER | 2.370 INCHES MINIMUM AND 2.390 INCHES MAXIMUM |
| CRSQ | COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL BOTH ENDS |
| ADBM | DRIVE POINT QUANTITY | 17 |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| ABPH | SMALL END DIAMETER | 2.000 INCHES MINIMUM AND 2.020 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | EPB 4-230, CODE 31, CAGEC 02731 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| AAJD | THREAD CLASS | 3B |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626, COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| ABQU | DRIVE POINT DEPTH | 0.140 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
| ACTA | NUT STYLE | ROUND |
| ADBG | NUT THICKNESS | 0.460 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| CQJX | NOMINAL THREAD SIZE | 1.563 INCHES |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |