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 |
|---|---|
| 27188 | MARMON-HERRINGTON COMPANY INC |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CQFM | HARDNESS RATING | 13.0 ROCKWELL C MINIMUM OVERALL AND 21.0 ROCKWELL C MAXIMUM OVERALL |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.125 INCHES NOMINAL |
| AAJF | THREAD DIRECTION | LEFT-HAND |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AAVP | RIB MAJOR DIAMETER | 0.910 INCHES MINIMUM AND 0.920 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.312 INCHES NOMINAL |
| MATT | MATERIAL | STEEL OVERALL |
| AASL | HEAD DIAMETER | 1.141 INCHES MINIMUM AND 1.172 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASB | FASTENER LENGTH | 1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM |
| CFSG | NONSTANDARD THREAD PITCH DIAMETER | +0.7044/+0.7084 INCHES |
| AATX | SHOULDER LENGTH | 0.374 INCHES MINIMUM FIRST SHOULDER AND 0.390 INCHES MAXIMUM FIRST SHOULDER |
| AATN | SHOULDER DIAMETER | 0.876 INCHES MINIMUM FIRST SHOULDER AND 0.878 INCHES MAXIMUM FIRST SHOULDER |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| AASA | THREAD LENGTH | 1.062 INCHES MINIMUM |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| AAVU | RIB QUANTITY | 40 |
| AAVQ | RIB LENGTH | 0.500 INCHES NOMINAL |
| CWYB | SHOULDER SHAPE | RIBBED FIRST SHOULDER |