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 |
|---|---|---|
| CWYB | SHOULDER SHAPE | ROUND ALL SHOULDERS |
| AATN | SHOULDER DIAMETER | 0.778 INCHES MINIMUM SECOND SHOULDER AND 0.781 INCHES MAXIMUM SECOND SHOULDER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | TDA B18 FSCM 86654 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| AASB | FASTENER LENGTH | 2.750 INCHES NOMINAL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASL | HEAD DIAMETER | 1.250 INCHES MINIMUM AND 1.310 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AATN | SHOULDER DIAMETER | 0.798 INCHES MINIMUM FIRST SHOULDER AND 0.808 INCHES MAXIMUM FIRST SHOULDER |
| AAVP | RIB MAJOR DIAMETER | 0.802 INCHES MINIMUM AND 0.810 INCHES MAXIMUM |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.500 INCHES NOMINAL |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASA | THREAD LENGTH | 0.960 INCHES MINIMUM |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| AAJD | THREAD CLASS | 2A |
| AAVU | RIB QUANTITY | 36 |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| AATX | SHOULDER LENGTH | 1.070 INCHES NOMINAL SECOND SHOULDER |
| AATX | SHOULDER LENGTH | 0.310 INCHES NOMINAL FIRST SHOULDER |
| AASU | HEAD HEIGHT | 0.310 INCHES NOMINAL |
| AAVQ | RIB LENGTH | 0.500 INCHES NOMINAL |