# NSN 5310-01-478-7231: Nut, Self-Locking, Hexagon

NSN 5310-01-478-7231 (also written 5310014787231; NIIN 01-478-7231) is a nut, self-locking, hexagon in Federal Supply Class 5310, Nuts and Washers. 3 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-01-478-7231 (5310014787231)
- NIIN: 01-478-7231 (014787231)
- Item name: NUT,SELF-LOCKING,HEXAGON
- Federal Supply Class: [FSC 5310 Nuts and Washers](https://nsnexplorer.com/fsc/5310/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAUM | LOCKING FEATURE | FREE-RUNNING ALL METAL DESIGN |
| ADEA | NUT HEIGHT | INCHES NOMINAL 1.125 |
| AGAV | END ITEM IDENTIFICATION | 2320-01-465-2174; MRAP - COUGAR ISS 1.0; MRAP - COUGAR ISS 1.5 |
| ASDB | WIDTH ACROSS FLATS | INCHES NOMINAL 2.088 |
| BZRR | THREAD SERIES | UN |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| CQJX | NOMINAL THREAD SIZE | INCHES 1.750 |
| CRTM | BEARING SURFACE TYPE | CHAMFERED |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, HEX 1.75-12 NS UF |
| FEAT | SPECIAL FEATURES | MIL-STD-100E REVIEW RECOMMENDED;HARDNESS-ROCKWELL C 30-38 |
| MATT | MATERIAL | OVERALL STEEL |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 12640793 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3000247 | 45152 | OSHKOSH CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3000247 | 75Q65 | OSHKOSH DEFENSE LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-21 | [SPE7LX24D0096/SPE4AX26FZ741](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310014787231) | NUT, SELF-LOCKING, HEXAGON | OSHKOSH DEFENSE LLC | $14,527.08 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310014787231&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310014787231
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/5310-01-478-7231/
JSON: https://nsnexplorer.com/api/nsn/5310-01-478-7231.json