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) | 01-321-3565 (013213565) |
| NCB Code | USA (01) |
| Manufacturer | Military Standards Corp, Chart Inc, Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.851 INCHES MINIMUM AND 1.016 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.210 INCHES MINIMUM AND 1.250 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.720 INCHES MINIMUM AND 0.781 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | PATCH OR STRIP THREADS |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.219 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM FASTENER |
| CRSQ | COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
| MATT | MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| MATT | MATERIAL | STEEL FASTENER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE FASTENER |
| SFTT | SURFACE TREATMENT | CADMIUM AND CHROMATE FASTENER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2M CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 4 TYPE |
| Relevant Components for NSN - 5305-01-321-3565, 5305013213565 | ||||
| 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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