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 |
|---|---|---|
| MATT | MATERIAL | STEEL COMP 4620H OVERALL OR STEEL COMP 8620H OVERALL OR STEEL COMP 8622 OVERALL OR STEEL COMP 4320H OVERALL OR STEEL COMP 8622H OVERALL OR STEEL COMP 3120 OVERALL OR STEEL COMP 4427 OVERALL |
| AAVT | RIB MINOR DIAMETER | 0.945 INCHES NOMINAL |
| AASL | HEAD DIAMETER | 1.312 INCHES NOMINAL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| AASB | FASTENER LENGTH | 4.188 INCHES NOMINAL |
| AAVP | RIB MAJOR DIAMETER | 1.020 INCHES MINIMUM AND 1.023 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 223.0 BRINELL STANDARD MINIMUM OVERALL AND 227.0 BRINELL STANDARD MAXIMUM OVERALL |
| 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 |
| AATX | SHOULDER LENGTH | 2.688 INCHES NOMINAL FIRST SHOULDER |
| AASU | HEAD HEIGHT | 0.312 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.973 INCHES MINIMUM FIRST SHOULDER AND 0.977 INCHES MAXIMUM FIRST SHOULDER |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AAVQ | RIB LENGTH | 0.438 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| AAJD | THREAD CLASS | 2A |
| AAVU | RIB QUANTITY | 36 |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| CRKB | RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| AASA | THREAD LENGTH | 1.188 INCHES MINIMUM |