| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-143-5040 (011435040) |
| NCB Code | USA (01) |
| Manufacturer | West Coast Aerospace Inc, Fastener Innovation Technology Inc, Reid Products Inc, Huck International Inc, Alcoa Global Fasteners Inc, Boeing Company The, Hi Shear Corporation, Lisi Aerospace Canada Corp, Sps Technologies Inc |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| HT4020-5-21AX | west coast aerospace inc | screw shoulder | 60516 | RFQ |
| HT4020-5-21AX | fastener innovation technology inc | screw shoulder | 58998 | RFQ |
| 11927C5-21A | reid products inc | screw shoulder | 59563 | RFQ |
| HT4020-5-21AX | huck international inc | screw shoulder | 97928 | RFQ |
| HT4020-5-21AX | alcoa global fasteners inc | screw shoulder | 92215 | RFQ |
| ST3M653C5-21A | boeing company the | screw shoulder | 76301 | RFQ |
| HT4020-5-21AX | hi shear corporation | screw shoulder | 73197 | RFQ |
| HT4020-5-21AX | lisi aerospace canada corp | screw shoulder | l4528 | RFQ |
| HT4020-5-21AX | sps technologies inc | screw shoulder | k5673 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.506 INCHES MINIMUM AND 0.573 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.828 INCHES MINIMUM AND 1.875 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| AASL | HEAD DIAMETER | 0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.3271 INCHES MINIMUM FIRST SHOULDER AND 0.3276 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.218 INCHES MINIMUM FIRST SHOULDER AND 1.240 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 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 - 5305-01-143-5040, 5305011435040 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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