The Ring,piston, cataloged under National Stock Number 4310-01-256-2211, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Hexco International Dba Acd. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-256-2211 |
| Primary Part Number | 16289-1 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Hexco International Dba Acd |
| Status | ACTIVE |
| Ring Style | CONCENTRIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 16289-1 PRIMARY | Hexco International Dba Acd (USA) |
| 16226 ITEM 17 | Hexco International Dba Acd (USA) |
| Reference | Meaning |
|---|---|
| 16288-1 | C/1 Advisory reference — outside the item-of-supply concept Hexco International Dba Acd |
NSN 4310-01-256-2211 is a Ring,piston, manufactured by Hexco International Dba Acd, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-256-2211 has 2 manufacturer part numbers on file: 16289-1 (Hexco International Dba Acd), 16226 ITEM 17 (Hexco International Dba Acd).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-363-1009, 5998-01-476-1737. Verify interchangeability with system specifications before substitution.
Key specifications for 16289-1: Ring Style: CONCENTRIC. 1 specification is documented in the U.S. Government catalog.
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.