The Ring,piston, cataloged under National Stock Number 4310-01-031-8351, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Hastings Manufacturing Co Div Hastings Manufacturing Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Ring,piston |
| FSC / FSG | 4310 — Compressors and Vacuum Pumps (FSG 43) |
| Manufacturers | Hastings Manufacturing Co Div Hastings Manufacturing Company (CAGE 74069); Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001) |
| Parameter | Value |
|---|---|
| NSN | 4310-01-031-8351 |
| Primary Part Number | 2505431 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Hastings Manufacturing Co Div Hastings Manufacturing Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 2505431 PRIMARY | Hastings Manufacturing Co Div Hastings Manufacturing Company (USA) |
| 2505431 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| C-10-148 | 3/9 Design control — primary reference Spx Corp |
| C-10-148 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
NSN 4310-01-031-8351 is a Ring,piston, manufactured by Hastings Manufacturing Co Div Hastings Manufacturing Company, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-031-8351 has 2 manufacturer part numbers on file: 2505431 (Hastings Manufacturing Co Div Hastings Manufacturing Company), 2505431 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.