The Ring,piston, cataloged under National Stock Number 4310-00-157-5286, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Meggitt Aerospace Limited. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Meggitt Aerospace Limited (CAGE K1037); Bae Systems (operations) Limited (CAGE U9143) |
| Parameter | Value |
|---|---|
| NSN | 4310-00-157-5286 |
| Primary Part Number | AC020532 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Meggitt Aerospace Limited |
| 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 |
|---|---|
| AC020532 | Meggitt Aerospace Limited (GBR) |
| 7R504 | Meggitt Aerospace Limited (GBR) |
| 7R504 | Bae Systems (operations) Limited (GBR) |
| 7R9641007 | Meggitt Aerospace Limited (GBR) |
| Reference | Meaning |
|---|---|
| 7R504 | 3/9 Design control — primary reference British Aerospace (military Aircraft & Aerostructures) |
NSN 4310-00-157-5286 is a Ring,piston, manufactured by Meggitt Aerospace Limited, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-157-5286 has 4 manufacturer part numbers on file: AC020532 (Meggitt Aerospace Limited), 7R504 (Meggitt Aerospace Limited), 7R504 (Bae Systems (operations) Limited), 7R9641007 (Meggitt Aerospace Limited).
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.