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) | 00-811-5178 (008115178) |
| NCB Code | USA (00) |
| Manufacturer | Military Specifications, Caterpillar Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| MIL-S-1222 | military specifications | screw cap hexagon head | RFQ |
| MIL-DTL-1222 | military specifications | screw cap hexagon head | RFQ |
| 8F4197 | caterpillar inc | screw cap hexagon head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.125 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 5.500 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.319 INCHES MINIMUM AND 0.337 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.437 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 14 |
| CQBC | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | HEXAGON |
| AATB | WIDTH BETWEEN FLATS | 0.612 INCHES MINIMUM AND 0.652 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 8 GRADE |
| Relevant Components for NSN - 5305-00-811-5178, 5305008115178 | ||||
| 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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