AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Cap Socket Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-274-2899 (012742899) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com, Military Standards Corp, Military Specifications |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| MS21295-50 | national aerospace standards com | screw cap socket head | RFQ |
| MS21295-50 | military standards corp | screw cap socket head | RFQ |
| FF-S-86 | military specifications | screw cap socket head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.789 INCHES MINIMUM AND 0.890 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.2435 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | PELLET THREADS OR STRIP THREADS OR PATCH THREADS |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 80.0 ROCKWELL C MINIMUM OVERALL |
| MATT | MATERIAL | STEEL COMP 302 OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 316 OVERALL OR STEEL COMP 384 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A493 ASSN 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 | UNF |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE |
| Relevant Components for NSN - 5305-01-274-2899, 5305012742899 | ||||
| 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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