Part Number
Part Number:
NSN:
NIIN:
Item Name:
NUT , SELF-LOCKING , EXTENDED WASHER
Definition:
A NUT HAVING 12 DRIVE POINTS, 24 SIDES, AND AN INTEGRAL WASHER WHICH EXTENDS BEYOND THE POINTS OR PERIPHERY. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.
CAGE Information
| Code | Company |
|---|---|
| 00198 | PRATT AND WHITNEY CANADA INC WHITNEY |
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 |
|---|---|---|
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES |
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES |
| ACTA | NUT STYLE | DOUBLE HEXAGON |
| ASDB | WIDTH ACROSS FLATS | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| ADEM | WASHER THICKNESS | 0.024 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAVX | WASHER OUTSIDE DIAMETER | 0.438 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.230 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| AAJD | THREAD CLASS | 3BG |
| BZRR | THREAD SERIES | UNJF |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |