AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Cap Hexagon Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-018-1431 (000181431) |
| NCB Code | USA (00) |
| Manufacturer | Military Standards Corp, Allison Transmission Inc, Coltec Industries Inc, W W Williams Midwest Inc, General Motors Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| MS35296-113 | military standards corp | screw cap hexagon head | RFQ |
| 181431 | allison transmission inc | screw cap hexagon head | RFQ |
| 11FM10BX1-2-20X1-2 | coltec industries inc | screw cap hexagon head | RFQ |
| 181431 | w w williams midwest inc | screw cap hexagon head | RFQ |
| 181431 | general motors corp | screw cap hexagon head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.250 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 1.500 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQBC | MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 23.0 ROCKWELL C MINIMUM OVERALL AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE |
| Relevant Components for NSN - 5305-00-018-1431, 5305000181431 | ||||
| 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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