# NSN 5325-01-257-4413: Stud Assembly, Turnlock Fastener

NSN 5325-01-257-4413 (also written 5325012574413; NIIN 01-257-4413) is a stud assembly, turnlock fastener in Federal Supply Class 5325, Fastening Devices. 3 manufacturer part numbers from 2 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5325-01-257-4413 (5325012574413)
- NIIN: 01-257-4413 (012574413)
- Item name: STUD ASSEMBLY,TURNLOCK FASTENER
- Federal Supply Class: [FSC 5325 Fastening Devices](https://nsnexplorer.com/fsc/5325/)
- 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 2026-10-15)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABMZ | DIAMETER | INCHES MINIMUM 0.428 AND INCHES MAXIMUM 0.448 |
| ADQB | SECURING DEVICE TYPE | SPRING |
| AGRD | TURNLOCK STUD HEAD STYLE | — |
| AGRE | STUD ASSEMBLY STYLE | — |
| AGRF | DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD | INCHES MINIMUM 0.355 AND INCHES MAXIMUM 0.375 |
| AGRH | EYELET OUTSIDE DIAMETER | INCHES NOMINAL 0.531 |
| AGRK | EYELET LENGTH | INCHES NOMINAL 0.470 |
| AGSM | MATERIAL ACCOMMODATED THICKNESS | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.084 |
| AKCV | DRIVE TYPE | SLOTTED |
| MATT | MATERIAL | OVERALL STEEL |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 2,CL 2 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 1219-PS4-1-Z3C | 72794 | SOUTHCO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 128-0012-028 | 94756 | THE BOEING COMPANY DIV LEGACY BOEING HB1 | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SPS4-1 | 72794 | SOUTHCO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-4235 | 113 | 2026-10-22 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5325012574413&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5325012574413&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5325012574413
- 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/5325-01-257-4413/
JSON: https://nsnexplorer.com/api/nsn/5325-01-257-4413.json