Part Number
Part Number:
NSN:
NIIN:
Item Name:
BOLT , RIBBED SHOULDER
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. IT HAS A SERIES OF LONGITUDINAL RIBS, SPLINES OR SERRATIONS ON ALL OR A PART OF THE SHOULDER. THE MINOR DIAMETER OF THE RIBS MUST BE GREATER THAN THE MAJOR DIAMETER OF THE THREADS. SEE ALSO BOLT, RIBBED NECK.
CAGE Information
| Code | Company |
|---|---|
| 18876 | U S ARMY AVIATION AND MISSILE COMMAN |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASK | HEAD STYLE | PAN NO. 2 |
| AASA | THREAD LENGTH | 0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 1020 OVERALL |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AATX | SHOULDER LENGTH | 0.552 INCHES MINIMUM FIRST SHOULDER AND 0.562 INCHES MAXIMUM FIRST SHOULDER |
| AAVQ | RIB LENGTH | 0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASB | FASTENER LENGTH | 1.719 INCHES MINIMUM AND 1.871 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 2A |
| CQBC | MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| AATN | SHOULDER DIAMETER | 0.526 INCHES MINIMUM FIRST SHOULDER AND 0.531 INCHES MAXIMUM FIRST SHOULDER |
| AAVP | RIB MAJOR DIAMETER | 0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AASU | HEAD HEIGHT | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 20.0 ROCKWELL C MINIMUM OVERALL AND 24.0 ROCKWELL C MAXIMUM OVERALL |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.062 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CWYB | SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| AASL | HEAD DIAMETER | 0.750 INCHES NOMINAL |