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) | 00-331-8037 (003318037) |
| NCB Code | USA (00) |
| Manufacturer | Allis Chalmers Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| CQFM | Hardness Rating | 32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| AHYM | Nominal Thread Diameter | 0.438 INCHES |
| MATT | Material | STEEL OVERALL |
| AATB | Width Between Flats | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| AASK | Head Style | HEXAGON |
| THSD | Thread Series Designator | UNF |
| AAJF | Thread Direction | RIGHT-HAND |
| CQBC | Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH |
| SFTT | Surface Treatment | CADMIUM OVERALL OR ZINC OVERALL |
| MRC | Decoded Requirement | Clear Text Reply |
| CMLP | Thread Quantity Per Inch | 20 |
| AAJD | Thread Class | 2A |
| AASB | Fastener Length | 2.500 INCHES NOMINAL |
| AASA | Thread Length | 1.125 INCHES MAXIMUM |
| ZZZT | Nondefinitive Spec/Std Data | 2 TYPE AND 10P STYLE AND 8 GRADE |
| AASU | Head Height | 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
| Relevant Components for NSN - 5305-00-331-8037, 5305003318037 | ||||
| 5355-00-582-7370 (5355005827370) | 5340-01-492-4288 (5340014924288) | 5340-00-523-3711 (5340005233711) | 5330-01-275-9444 (5330012759444) | |
| 5340-01-238-2053 (5340012382053) | 5365-01-693-2245 (5365016932245) | 5331-01-258-8240 (5331012588240) | 5365-01-672-1629 (5365016721629) | |
| 5365-01-432-4280 (5365014324280) | 5365-01-654-1906 (5365016541906) | 5340-01-451-0804 (5340014510804) | 5340-01-489-6012 (5340014896012) | |
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