Part Number
Definition:
A METALLIC HEADED FASTENER HAVING INTERNAL THREADS FOR A PORTION OF THE FULL LENGTH. IT MAY HAVE A SMOOTH, HEXAGON OR SPLINED SHANK WITH AN OPEN OR CLOSED END. IT IS DESIGNED TO BE EXPANDED TIGHTLY AGAINST THE MATERIAL IT IS BEING INSTALLED IN BY MEANS OF A SPECIAL TOOL. THE ITEM MUST HAVE A SPECIFIED GRIP RANGE. THE GRIP RANGE IS THE THICKNESS OF THE MATERIAL THE ITEM IS BEING INSTALLED IN. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.
CAGE Information
| Code | Company |
|---|---|
| 81755 | LOCKHEED MARTIN CORPORATION DBA LOCK |
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 |
|---|---|---|
| BZRR | THREAD SERIES | UNF |
| AASK | HEAD STYLE | ELIPTICAL COUNTERSUNK |
| AZKQ | TEMP RATING | 450.0 DEG FAHRENHEIT NOMINAL |
| MATT | MATERIAL | STEEL COMP 304 OVERALL OR STEEL COMP 305 OVERALL |
| CQFM | HARDNESS RATING | NOT RATED |
| ACTA | NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CQJX | NOMINAL THREAD SIZE | 0.438 INCHES |
| AAJD | THREAD CLASS | 3B |
| AAWY | COUNTERBORE DIAMETER | 0.442 INCHES MINIMUM NUT AND 0.445 INCHES MAXIMUM NUT |
| ABAJ | LUBRICATION | DRY FILM LUBRICANT |
| AAZG | HEAD MAJOR DIAMETER | 0.704 INCHES MINIMUM AND 0.708 INCHES MAXIMUM |
| CRKK | HEAD MAJOR COUNTERSINK ANGLE | 75.75 DEGREES MINIMUM AND 76.25 DEGREES MAXIMUM |
| ACVN | NUT LENGTH | 2.034 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.054 INCHES MINIMUM AND 0.108 INCHES MAXIMUM |
| ACTD | NUT DIAMETER | 0.537 INCHES MINIMUM AND 0.539 INCHES MAXIMUM |
| ADFN | SHANK END TYPE | CLOSED |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| ADEY | NUT GRIP RANGE | +0.700/+0.760 INCHES |
| AAZH | HEAD MINOR DIAMETER | 0.598 INCHES MINIMUM AND 0.602 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | SHANK END CHAMFER 45.00 DEG,1/4 NUT DIA LG |
| CSLM | HEAD MINOR COUNTERSINK ANGLE | 59.75 DEGREES MINIMUM AND 60.25 DEGREES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES OVERALL |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |