| Item Name | Bolt Ribbed Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-771-2548 (007712548) |
| NCB Code | USA (00) |
| Manufacturer | Kelsey Hayes Company Inc, General Motors Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AASA | THREAD LENGTH | 0.781 INCHES MINIMUM AND 0.812 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.312 INCHES MINIMUM AND 1.328 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.531 INCHES NOMINAL FIRST SHOULDER |
| AAVQ | RIB LENGTH | 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.062 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CWYB | SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| MATT | MATERIAL | STEEL OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASL | HEAD DIAMETER | 0.750 INCHES NOMINAL |
| AASY | DISTANCE FROM CENTERLINE TO FLAT | 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| AATX | SHOULDER LENGTH | 0.380 INCHES MINIMUM FIRST SHOULDER AND 0.390 INCHES MAXIMUM FIRST SHOULDER |
| AAVP | RIB MAJOR DIAMETER | 0.550 INCHES MINIMUM AND 0.560 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.437 INCHES |
| CQHQ | MINIMUM YIELD STRENGTH | 75000 POUNDS PER SQUARE INCH |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-771-2548, 5306007712548 | ||||
| 5355-00-871-8773 (5355008718773) | 5340-01-243-1107 (5340012431107) | 5315-01-506-6976 (5315015066976) | 5360-01-371-2450 (5360013712450) | |
| 5305-01-613-5639 (5305016135639) | 5330-01-519-5567 (5330015195567) | 5310-01-577-1001 (5310015771001) | 5342-01-650-6980 (5342016506980) | |
| 5325-01-544-9407 (5325015449407) | 5330-01-276-9620 (5330012769620) | 5340-01-659-7595 (5340016597595) | 5340-01-362-7603 (5340013627603) | |
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