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) | 01-266-8373 (012668373) |
| NCB Code | USA (01) |
| Manufacturer | Federal Specifications, Military Standards Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| FF-S-85 | federal specifications | screw cap hexagon head | RFQ |
| MS51109-16 | military standards corp | screw cap hexagon head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.906 INCHES MINIMUM AND 3.000 INCHES MAXIMUM |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.074 INCHES MINIMUM FIRST HOLE AND 0.082 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQBC | MINIMUM TENSILE STRENGTH | 70000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 235.0 BRINELL B MAXIMUM OVERALL |
| CQHQ | MINIMUM YIELD STRENGTH | 40000 POUNDS PER SQUARE INCH |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.787 INCHES MINIMUM FIRST HOLE AND 2.901 INCHES MAXIMUM FIRST HOLE |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES THREADS |
| MATT | MATERIAL | STEEL COMP 410 OVERALL OR STEEL COMP 416 OVERALL OR STEEL COMP 430 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE |
| Relevant Components for NSN - 5305-01-266-8373, 5305012668373 | ||||
| 5340-01-131-8536 (5340011318536) | 5306-01-438-9363 (5306014389363) | 5306-00-839-1951 (5306008391951) | 5330-00-854-3797 (5330008543797) | |
| 5330-99-729-7553 (5330997297553) | 5306-01-710-7805 (5306017107805) | 5310-01-125-4124 (5310011254124) | 5315-01-514-6048 (5315015146048) | |
| 5306-00-009-5138 (5306000095138) | 5340-01-575-9010 (5340015759010) | 5305-00-130-4358 (5305001304358) | 5310-01-513-5337 (5310015135337) | |
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