| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-413-6624 (004136624) |
| NCB Code | USA (00) |
| Manufacturer | Boeing Company The, Hi Shear Corporation, Sps Technologies Inc, Alcoa Fastening Systems Ltd, Lisi Aerospace Canada Corp, Alcoa Global Fasteners Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 3M50-4-13 | boeing company the | screw shoulder | RFQ |
| HT41UA13 | hi shear corporation | screw shoulder | RFQ |
| 54267-4-13 | sps technologies inc | screw shoulder | RFQ |
| HT41UA13 | alcoa fastening systems ltd | screw shoulder | RFQ |
| HT409A4-13 | alcoa fastening systems ltd | screw shoulder | RFQ |
| HT41UA13 | lisi aerospace canada corp | screw shoulder | RFQ |
| HT409A4-13 | alcoa global fasteners inc | screw shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.265 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| AASL | HEAD DIAMETER | 0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.0652 INCHES MINIMUM AND 0.0672 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.2641 INCHES MINIMUM FIRST SHOULDER AND 0.2651 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.701 INCHES MINIMUM FIRST SHOULDER AND 0.723 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRSQ | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | FURNISHED WITH ONE RUBBER O RING |
| MATT | MATERIAL | STEEL COMP 4140 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4130 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST TREATMENT RESPONSE OVERALL OR MIL-S-5000 MIL SPEC 2ND TREATMENT RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 3RD TREATMENT RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 4TH TREATMENT RESPONSE OVERALL OR MIL-S-6758 MIL SPEC 5TH |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5305-00-413-6624, 5305004136624 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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