# NSN 5310-01-668-3781: Nut, Plain, Castellated, Hexagon

NSN 5310-01-668-3781 (also written 5310016683781; NIIN 01-668-3781) is a nut, plain, castellated, hexagon in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5310-01-668-3781 (5310016683781)
- NIIN: 01-668-3781 (016683781)
- Item name: NUT,PLAIN,CASTELLATED,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 Q: the government lacks adequate data or rights, but breakout to competition is expected. (observed 2026-10-10)
- Acquisition method code: 5

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| BZRR | THREAD SERIES | M |
| CQJX | NOMINAL THREAD SIZE | MILLIMETERS 1.5 |
| SFTT | SURFACE TREATMENT | OVERALL ZINC |
| AGAV | END ITEM IDENTIFICATION | 3810-016079674 |
| ACTA | NUT STYLE | — |
| ADEA | NUT HEIGHT | MILLIMETERS NOMINAL 15.0 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ASDB | WIDTH ACROSS FLATS | MILLIMETERS NOMINAL 36.0 |
| MATT | MATERIAL | OVERALL STEEL |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,CASTLE, HEXAGON |
| CSPF | HOLE NOMINAL THREAD DIAMETER | MILLIMETERS 24.0 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 01921799 | 12361 | GROVE U.S. LLC DBA GROVE US LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 11505628 | 0Y3H3 | FASTENAL COMPANY DBA FASTENAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310016683781&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310016683781
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/5310-01-668-3781/
JSON: https://nsnexplorer.com/api/nsn/5310-01-668-3781.json