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) | 00-637-9234 (006379234) |
| NCB Code | USA (00) |
| Manufacturer | Military Specifications, Fairbanks Morse Llc, Coltec Industries Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 2.250 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 6.375 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 1.285 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.875 INCHES |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| CMLP | THREAD QUANTITY PER INCH | 14 |
| CQBC | MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 95.0 ROCKWELL B MAXIMUM OVERALL |
| FEAT | SPECIAL FEATURES | ONE HOLE DRILLED IN HEAD |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 2 GRADE |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY DRILLED HOLE IN HEAD |
| Relevant Components for NSN - 5305-00-637-9234, 5305006379234 | ||||
| 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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