AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-191-7496 (011917496) |
| NCB Code | USA (01) |
| Manufacturer | Boeing Company The, Hi Shear Corporation, West Coast Aerospace Inc, Huck International Inc, Alcoa Global Fasteners Inc, Fastener Innovation Technology Inc, Sps Technologies Inc, Lisi Aerospace Canada Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| ST3M653C4-5A | boeing company the | screw shoulder | RFQ |
| HT4020-4-5AX | hi shear corporation | screw shoulder | RFQ |
| WC4020-4-5AX | west coast aerospace inc | screw shoulder | RFQ |
| HT4020-4-5AX | huck international inc | screw shoulder | RFQ |
| ST3M653C4-5A | alcoa global fasteners inc | screw shoulder | RFQ |
| HT4020-4-5AX | alcoa global fasteners inc | screw shoulder | RFQ |
| ST3M653C4-5A | fastener innovation technology inc | screw shoulder | RFQ |
| ST3M653C4-5A | sps technologies inc | screw shoulder | RFQ |
| HT4020-4-5AX | lisi aerospace canada corp | screw shoulder | RFQ |
| HT4020-4-5AX | sps technologies inc | screw shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.410 INCHES MINIMUM AND 0.443 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.765 INCHES MINIMUM AND 0.812 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| AASL | HEAD DIAMETER | 0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.2646 INCHES MINIMUM FIRST SHOULDER AND 0.2651 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.237 INCHES MINIMUM FIRST SHOULDER AND 0.255 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | FURNISHED WITH ONE O RING |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ST7-251 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5305-01-191-7496, 5305011917496 | ||||
| 5305-01-642-0405 (5305016420405) | 5340-01-469-1045 (5340014691045) | 5315-01-562-5736 (5315015625736) | 5315-01-575-7397 (5315015757397) | |
| 5310-00-347-0214 (5310003470214) | 5320-01-073-2961 (5320010732961) | 5342-01-117-9590 (5342011179590) | 5355-00-201-5369 (5355002015369) | |
| 5305-01-321-3806 (5305013213806) | 5330-00-256-6918 (5330002566918) | 5365-01-625-0045 (5365016250045) | 5310-01-593-4780 (5310015934780) | |
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