# NSN 4310-00-039-5087: Ring, Piston

NSN 4310-00-039-5087 (also written 4310000395087; NIIN 00-039-5087) is a ring, piston in Federal Supply Class 4310, Compressors and Vacuum Pumps. 3 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4310-00-039-5087 (4310000395087)
- NIIN: 00-039-5087 (000395087)
- Item name: RING,PISTON
- Federal Supply Class: [FSC 4310 Compressors and Vacuum Pumps](https://nsnexplorer.com/fsc/4310/)
- Federal Supply Group: [FSG 43](https://nsnexplorer.com/group/43/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | — |
| ACXD | RING STYLE | — |
| ACXF | RADIAL WALL THICKNESS | INCHES NOMINAL 0.1250 |
| ACXJ | OVERALL WIDTH | INCHES NOMINAL 0.2470 |
| ACXZ | STANDARD BORE DIAMETER | INCHES 5.936 |
| ADTE | JOINT STYLE | — |
| FEAT | SPECIAL FEATURES | DESIGN ANALYSIS; NUCLEAR HARDNESS CRITICAL |
| MATT | MATERIAL | TOP INSIDE PERIPHERY COPPER ALLOY |
| NHCF | NUCLEAR HARDNESS CRITICAL FEATURE | HARDENED |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 990505-11 | 13002 | GOODRICH CORPORATION DIV ADVANCED STRUCTURES LANDING SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 990505-11 | 17576 | GOODRICH CORP DBA GOODRICH CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 990505-11 | 6K4C8 | GOODRICH CORPORATION | [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=4310000395087&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4310000395087
- 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/4310-00-039-5087/
JSON: https://nsnexplorer.com/api/nsn/4310-00-039-5087.json