# NSN 5325-00-425-8529: Ring, Retaining

NSN 5325-00-425-8529 (also written 5325004258529; NIIN 00-425-8529) is a ring, retaining in Federal Supply Class 5325, Fastening Devices. 9 manufacturer part numbers from 9 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5325-00-425-8529 (5325004258529)
- NIIN: 00-425-8529 (004258529)
- Item name: RING,RETAINING
- 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 2026-11-02)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABQK | END STYLE | — |
| MATT | MATERIAL | NICKEL ALLOY X-750 |
| AJRB | MATERIAL DIAMETER | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.065 |
| AASG | CASEHARDENING INDICATOR | NOT CASE-HARDENED |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | — |
| AARX | INSIDE DIAMETER | INCHES MINIMUM 3.575 AND INCHES MAXIMUM 3.675 |
| ALBY | USAGE DESIGN | INTERNAL |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 3.705 AND INCHES MAXIMUM 3.795 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASSN STD SINGLE MATERIAL RESPONSE A-S 5698 |
| ACXD | RING STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4010239 | 00679 | CASTLE INDUSTRIES INC. OF CALIFORNIA DBA M.C. GILL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | 11449 | TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | 27068 | DCP SPRING ACQUISITION COMPANY, INC. DBA NEW ENGLAND SPRING DIV NEW ENGLAND SPRING | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | 77445 | RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | 81753 | CONNECTICUT SPRING & STAMPING CORPORATION THE DBA CONNECTICUT SPRING & STAMPING CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | 81924 | ATOMIC ENERGY COMMISSION OAK RIDGE OPNS OFFICE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | 92830 | BARNES GROUP INC. DBA ASSOCIATED SPRING DIV ASSOCIATED SPRING BRISTOL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4010239 | D2018 | HOFFMANN-WERKE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5325PL0789078 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-20 | [SPE4AX25D9424/SPE4AX26F395C](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5325004258529) | RING, RETAINING | RTX CORPORATION DIV PRATT & WHITNEY | $429.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5325004258529&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5325004258529
- 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/5325-00-425-8529/
JSON: https://nsnexplorer.com/api/nsn/5325-00-425-8529.json