# NSN 5310-01-123-4613: Nut, Plain, Castellated, Hexagon

NSN 5310-01-123-4613 (also written 5310011234613; NIIN 01-123-4613) is a nut, plain, castellated, hexagon in Federal Supply Class 5310, Nuts and Washers. 4 manufacturer part numbers from 4 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5310-01-123-4613 (5310011234613)
- NIIN: 01-123-4613 (011234613)
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-13)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAWY | COUNTERBORE DIAMETER | NUT INCHES MINIMUM 0.265 AND INCHES MAXIMUM 0.275 |
| ACTA | NUT STYLE | — |
| ADEA | NUT HEIGHT | INCHES MINIMUM 0.408 AND INCHES MAXIMUM 0.428 |
| ADFK | NUT COUNTERBORE DEPTH | NUT INCHES MINIMUM 0.148 AND INCHES MAXIMUM 0.168 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.428 AND INCHES MAXIMUM 0.440 |
| BZRR | THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | ROCKWELL B MAXIMUM 94.0 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.250 |
| CRTM | BEARING SURFACE TYPE | CHAMFERED |
| CSXL | BEARING SURFACE FINISH | MICROINCHES 125.0 |
| MATT | MATERIAL | OVERALL STEEL COMP 4130 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-S-6758 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL MFR REF SINGLE TREATMENT RESPONSE SS8488,FSC- 78286 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| SS5095-4 | 56828 | ELI LILLY CANADA INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5095-4 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5095-4 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5095-4 | 84256 | AVIBANK MFG., INC. DBA AVIBANK MANUFACTURING INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-2134 | 2,797 | 2026-10-20 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310011234613&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310011234613&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011234613
- 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/5310-01-123-4613/
JSON: https://nsnexplorer.com/api/nsn/5310-01-123-4613.json