| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-144-0988 (011440988) |
| NCB Code | USA (01) |
| Manufacturer | West Coast Aerospace Inc, Alcoa Global Fasteners Inc, The Boeing Company, Huck International Inc, Lisi Aerospace, Hi Shear Corporation, Sps Technologies Ltd, Emhart Teknologies Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| WC4020-6-10AX | west coast aerospace inc | screw shoulder | RFQ |
| ST3M653C6-10A | alcoa global fasteners inc | screw shoulder | RFQ |
| ST3M653C6-10A | the boeing company | screw shoulder | RFQ |
| HT4020-6-10AX | huck international inc | screw shoulder | RFQ |
| HT4020-6-10AX | alcoa global fasteners inc | screw shoulder | RFQ |
| HT4020-6-10AX | lisi aerospace | screw shoulder | RFQ |
| HT4020-6-10AX | hi shear corporation | screw shoulder | RFQ |
| HT4020-6-10AX | sps technologies ltd | screw shoulder | RFQ |
| ST3M653C6-10A | emhart teknologies inc | screw shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.615 INCHES MINIMUM AND 0.682 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.250 INCHES MINIMUM AND 1.297 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| AASL | HEAD DIAMETER | 0.756 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.3896 INCHES MINIMUM FIRST SHOULDER AND 0.3901 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.504 INCHES MINIMUM FIRST SHOULDER AND 0.526 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | FURNISHED WITH ONE RUBBER O RING |
| MATT | MATERIAL | STEEL COMP XM-13 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5305-01-144-0988, 5305011440988 | ||||
| 5365-99-998-9980 (5365999989980) | 5365-99-998-9265 (5365999989265) | 5365-99-997-1598 (5365999971598) | 5365-99-996-9236 (5365999969236) | |
| 5365-99-994-0353 (5365999940353) | 5365-99-994-0176 (5365999940176) | 5365-99-992-1527 (5365999921527) | 5365-99-990-8469 (5365999908469) | |
| 5365-99-989-0900 (5365999890900) | 5365-99-987-5556 (5365999875556) | 5365-99-983-0520 (5365999830520) | 5365-99-979-8712 (5365999798712) | |
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