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) | 01-266-8351 (012668351) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com, Federal Specifications, Military Standards Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| NAS1351-08LL12P | national aerospace standards com | screw cap socket head | RFQ |
| FF-S-86 | federal specifications | screw cap socket head | RFQ |
| MS16998-21L | military standards corp | screw cap socket head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.663 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | PATCH THREADS OR STRIP THREADS |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.164 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 36 |
| CQBC | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM FASTENER AND 45.0 ROCKWELL C MAXIMUM FASTENER |
| CQHQ | MINIMUM YIELD STRENGTH | 155000 POUNDS PER SQUARE INCH |
| MATT | MATERIAL | PLASTIC LOCKING FEATURE |
| MATT | MATERIAL | STEEL FASTENER |
| SFTT | SURFACE TREATMENT | CADMIUM FASTENER AND CHROMATE FASTENER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 4 TYPE |
| Relevant Components for NSN - 5305-01-266-8351, 5305012668351 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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