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) | 00-787-7100 (007877100) |
| NCB Code | USA (00) |
| Manufacturer | Military Standards Corp, Kelsey Hayes Company Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASB | FASTENER LENGTH | 2.450 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.520 INCHES MINIMUM FIRST SHOULDER AND 0.525 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.780 INCHES NOMINAL FIRST SHOULDER |
| AAVP | RIB MAJOR DIAMETER | 0.550 INCHES MINIMUM AND 0.560 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.380 INCHES MINIMUM AND 1.410 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 1.000 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.200 INCHES NOMINAL |
| AAVQ | RIB LENGTH | 0.380 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.437 INCHES |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-787-7100, 5306007877100 | ||||
| 5320-01-311-2514 (5320013112514) | 5365-01-606-7886 (5365016067886) | 5310-01-687-5946 (5310016875946) | 5331-01-345-2325 (5331013452325) | |
| 5331-01-137-6352 (5331011376352) | 5340-01-677-5187 (5340016775187) | 5310-01-215-1121 (5310012151121) | 5330-01-558-9303 (5330015589303) | |
| 5320-01-007-1870 (5320010071870) | 5365-00-542-0989 (5365005420989) | 5305-01-279-0723 (5305012790723) | 5315-01-181-8363 (5315011818363) | |
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