# NSN 5325-01-139-4490: Ring, Retaining

NSN 5325-01-139-4490 (also written 5325011394490; NIIN 01-139-4490) is a ring, retaining in Federal Supply Class 5325, Fastening Devices. 6 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 5325-01-139-4490 (5325011394490)
- NIIN: 01-139-4490 (011394490)
- 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 G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | — |
| AARX | INSIDE DIAMETER | INCHES MINIMUM 0.570 AND INCHES MAXIMUM 0.583 |
| AASG | CASEHARDENING INDICATOR | NOT CASE-HARDENED |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 0.693 |
| ABMC | MAJOR THICKNESS | INCHES MINIMUM 0.033 AND INCHES MAXIMUM 0.037 |
| ACXD | RING STYLE | — |
| ALBY | USAGE DESIGN | EXTERNAL |
| ALME | MATERIAL HARDNESS RATING | ROCKWELL A MINIMUM 71.0 AND ROCKWELL A MAXIMUM 77.5 |
| MATT | MATERIAL | STEEL COMP 302 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL SPEC SINGLE MATERIAL RESPONSE -IL-S-5059, TYE 302 |
| SFTT | SURFACE TREATMENT | PASSIVATE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10053703 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2 0028-177 | AC90N | BAE SYSTEMS HAGGLUNDS AKTIEBOLAG | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2 0028-177 | S3465 | BAE SYSTEMS HAGGLUNDS AB | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5325PL1263103 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| M2742620105D | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-DTL-27426 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-01 | [SPE4A623D5016/SPE4A627F0100](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5325011394490) | RING, RETAINING | — | $475.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5325011394490&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5325011394490
- 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/5325-01-139-4490/
JSON: https://nsnexplorer.com/api/nsn/5325-01-139-4490.json