| Item Name | Insert Screw Thread |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5325 Fastening Devices |
| National Item Identification Number (NIIN) | 01-643-9591 (016439591) |
| NCB Code | USA (01) |
| Manufacturer | Alcoa Global Fasteners Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| BZYF | Internal Thread Relief Depth | 0.249 INCHES NOMINAL |
| MRC | Decoded Requirement | Clear Text Reply |
| MATT | Material | STEEL COMP 4130 OVERALL |
| AASA | Thread Length | 0.015 INCHES NOMINAL |
| BZGJ | Insert Size | 7/16-28 TNS 5 |
| THSD | Thread Series Designator | UNF |
| BZYG | Full Internal Thread Length | 0.256 INCHES NOMINAL |
| ABRY | Length | 0.375 INCHES NOMINAL |
| CQJX | Nominal Thread Size | 0.010 INCHES |
| AAJF | Thread Direction | RIGHT-HAND |
| STYL | Style Designator | KEYLOCK |
| Relevant Components for NSN - 5325-01-643-9591, 5325016439591 | ||||
| 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) | |
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