Part Number
Definition:
A NUT, FLAT ON TOP AND BOTTOM HAVING 6 FLAT SIDES. FOR ITEMS WHICH HAVE INTERNAL TAPERED OR STRAIGHT (PARALLEL) PIPE THREADS, SPECIFIC ELECTRICAL CONDUIT SIZE DESIGNATION, AND WHICH WHEN INSTALLED, PROVIDE A METHOD OF TIGHTENING TO LOCK THE CONNECTION, SEE LOCKNUT, ELECTRICAL CONDUIT. SEE ALSO LOCKNUT, TUBE FITTING. FOR ITEMS HAVING A THICKNESS (OR HEIGHT) EXCEEDING TWO TIMES THE WIDTH ACROSS THE FLATS, USE POST, ELECTRICAL-MECHANICAL EQUIPMENT. (WHEN HEIGHT OR THICKNESS AND/OR WIDTH ACROSS THE FLATS IS DESIGNATED AS A TOLERANCE DIMENSION, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE.)
CAGE Information
| Code | Company |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
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 |
|---|---|---|
| SFTT | SURFACE TREATMENT | ZINC OVERALL |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 5 GRADE |
| CQJX | NOMINAL THREAD SIZE | 0.500 INCHES |
| FEAT | SPECIAL FEATURES | AISI C1110 ZINC PLATED; ANSI B18.2.2; SAE GRADE 5 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AZKQ | TEMP RATING | NOT RATED |
| MATT | MATERIAL | STEEL OVERALL |
| ASDB | WIDTH ACROSS FLATS | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| ACTA | NUT STYLE | HEXAGON |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | NSI B18.2.2, SAE GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| CRTM | BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |
| BZRR | THREAD SERIES | UNC |
| ADEA | NUT HEIGHT | 0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 2B |
| CQFM | HARDNESS RATING | 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 13 |