AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Bolt Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-953-5242 (009535242) |
| NCB Code | USA (00) |
| Manufacturer | Northrop Grumman Systems Corporation, Alcoa Global Fasteners Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 6406963 | northrop grumman systems corporation | bolt shoulder | RFQ |
| VS2521F7-19 | alcoa global fasteners inc | bolt shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.265 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 3.710 INCHES NOMINAL |
| AASK | HEAD STYLE | ROUND W/WRENCH FLATS CHAMFERED |
| AASL | HEAD DIAMETER | 1.120 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.867 INCHES MINIMUM AND 0.873 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.735 INCHES MINIMUM SECOND SHOULDER AND 0.738 INCHES MAXIMUM SECOND SHOULDER |
| AATN | SHOULDER DIAMETER | 0.747 INCHES MINIMUM FIRST SHOULDER AND 0.748 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.080 INCHES NOMINAL SECOND SHOULDER |
| AATX | SHOULDER LENGTH | 1.130 INCHES NOMINAL FIRST SHOULDER |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQBC | MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.615 INCHES NOMINAL FIRST HOLE |
| CWYB | SHOULDER SHAPE | ROUND ALL SHOULDERS |
| FEAT | SPECIAL FEATURES | THIRD SHOULDER DIA 0.747 IN. MIN AND 0.748 IN. MAX LG 1.124 IN. |
| MATT | MATERIAL | STEEL COMP 4340 OVERALL |
| SFTT | SURFACE TREATMENT | CHROMIUM OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-953-5242, 5306009535242 | ||||
| 5305-01-642-0405 (5305016420405) | 5340-01-469-1045 (5340014691045) | 5315-01-562-5736 (5315015625736) | 5315-01-575-7397 (5315015757397) | |
| 5310-00-347-0214 (5310003470214) | 5320-01-073-2961 (5320010732961) | 5342-01-117-9590 (5342011179590) | 5355-00-201-5369 (5355002015369) | |
| 5305-01-321-3806 (5305013213806) | 5330-00-256-6918 (5330002566918) | 5365-01-625-0045 (5365016250045) | 5310-01-593-4780 (5310015934780) | |
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