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 |
|---|---|
| 78500 | MERITOR HEAVY VEHICLE SYSTEMS LLC |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASB | FASTENER LENGTH | 2.812 INCHES NOMINAL |
| AASL | HEAD DIAMETER | 1.312 INCHES NOMINAL |
| AAVP | RIB MAJOR DIAMETER | 1.019 INCHES MINIMUM AND 1.024 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 4427 OVERALL OR STEEL COMP 8620H OVERALL OR STEEL COMP 4620H OVERALL OR STEEL COMP 8622H OVERALL |
| AAVQ | RIB LENGTH | 0.422 INCHES MINIMUM AND 0.454 INCHES MAXIMUM |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.375 INCHES NOMINAL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASU | HEAD HEIGHT | 0.312 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 223.0 BRINELL STANDARD MINIMUM OVERALL AND 277.0 BRINELL STANDARD MAXIMUM OVERALL |
| AATN | SHOULDER DIAMETER | 0.973 INCHES MINIMUM FIRST SHOULDER AND 0.977 INCHES MAXIMUM FIRST SHOULDER |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AATX | SHOULDER LENGTH | 1.312 INCHES NOMINAL FIRST SHOULDER |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| AAJD | THREAD CLASS | 2A |
| AAVU | RIB QUANTITY | 36 |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| CQBC | MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH |
| CRKB | RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| CWYB | SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| AASA | THREAD LENGTH | 1.187 INCHES MINIMUM |