AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-470-0850 (014700850) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| NAS1581K3R2 | national aerospace standards com | screw close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ANEE | Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| AHYM | Nominal Thread Diameter | 0.190 INCHES |
| AASK | Head Style | FLAT COUNTERSUNK |
| MDCL | Material Document And Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| CSYM | Surface Finish | 32.0 MICROINCHES THREADS |
| AASB | Fastener Length | 0.471 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| THSD | Thread Series Designator | UNJF |
| AASL | Head Diameter | 0.258 INCHES MINIMUM AND 0.305 INCHES MAXIMUM |
| AASA | Thread Length | 0.337 INCHES MINIMUM AND 0.387 INCHES MAXIMUM |
| CQBC | Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH |
| MATT | Material | TITANIUM ALLOY UNS R56400 OVERALL |
| MRC | Decoded Requirement | Clear Text Reply |
| ABQZ | Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| AAJF | Thread Direction | RIGHT-HAND |
| CSYM | Surface Finish | 32.0 MICROINCHES GRIP |
| AAUR | Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
| CMLP | Thread Quantity Per Inch | 32 |
| ZZZK | Specification/Standard Data | 80205-NAS1581 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| CRSQ | Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FEAT | Special Features | INTERNAL DRIVE RIBBED |
| AAJD | Thread Class | 3A |
| Relevant Components for NSN - 5305-01-470-0850, 5305014700850 | ||||
| 5305-00-825-1285 (5305008251285) | 5315-01-177-1845 (5315011771845) | 5340-01-536-0624 (5340015360624) | 5330-01-398-3824 (5330013983824) | |
| 5365-00-602-2520 (5365006022520) | 5340-01-658-6711 (5340016586711) | 5306-00-488-7520 (5306004887520) | 5310-00-443-4905 (5310004434905) | |
| 5305-00-579-4230 (5305005794230) | 5306-01-488-3599 (5306014883599) | 5340-01-429-0378 (5340014290378) | 5305-01-208-9074 (5305012089074) | |
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