AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Bolt Ribbed Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-853-4524 (008534524) |
| NCB Code | USA (00) |
| Manufacturer | Rockwell International Corp, Meritor Heavy Vehicle Braking System, Axletech International Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AATN | SHOULDER DIAMETER | 0.974 INCHES MINIMUM FIRST SHOULDER AND 0.975 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.250 INCHES NOMINAL FIRST SHOULDER |
| AAVT | RIB MINOR DIAMETER | 0.945 INCHES NOMINAL |
| AAVU | RIB QUANTITY | 36 |
| CRKB | RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| AAJD | THREAD CLASS | 2A |
| AASA | THREAD LENGTH | 1.590 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 3.310 INCHES NOMINAL |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 1.310 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.310 INCHES NOMINAL |
| AAVP | RIB MAJOR DIAMETER | 0.998 INCHES MINIMUM AND 1.006 INCHES MAXIMUM |
| AAVQ | RIB LENGTH | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.620 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.938 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UN |
| Relevant Components for NSN - 5306-00-853-4524, 5306008534524 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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