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 |
|---|---|---|
| AAVT | RIB MINOR DIAMETER | 0.946 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |
| MATT | MATERIAL | STEEL COMP 3130 OVERALL OR STEEL COMP 3140 OVERALL |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.349 INCHES MINIMUM AND 0.411 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| AASB | FASTENER LENGTH | 2.810 INCHES MINIMUM AND 2.841 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | LEFT-HAND |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASA | THREAD LENGTH | 1.191 INCHES MINIMUM AND 1.221 INCHES MAXIMUM |
| AAVQ | RIB LENGTH | 0.560 INCHES MINIMUM AND 0.622 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AATN | SHOULDER DIAMETER | 0.974 INCHES MINIMUM FIRST SHOULDER AND 0.975 INCHES MAXIMUM FIRST SHOULDER |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| AAVU | RIB QUANTITY | 36 |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| AATX | SHOULDER LENGTH | 1.160 INCHES MINIMUM FIRST SHOULDER AND 1.220 INCHES MAXIMUM FIRST SHOULDER |
| AASU | HEAD HEIGHT | 0.310 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
| CRKB | RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| AASL | HEAD DIAMETER | 1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM |
| AAVP | RIB MAJOR DIAMETER | 0.998 INCHES MINIMUM AND 1.008 INCHES MAXIMUM |