The Ring Set,piston, cataloged under National Stock Number 2805-00-516-9443, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-516-9443 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| FSC Application Data | GASOLINE ENGINE RECIPROCATING |
| Ring Set Component Parts | PISTON RING,531491,02978,4; PISTON RING,36044,20978,2; PISTON RING,530677,02978,2 |
| Piston Accommodation Quantity | 2 |
| Standard Bore Diameter | 4.063 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 530677A3 | 3/9 Design control — primary reference Teledyne Industries Inc Teledyne Power Systems Div |
NSN 2805-00-516-9443 is a Ring Set,piston, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2805-00-993-5315. Verify interchangeability with system specifications before substitution.
Key specifications for 2805-00-516-9443: FSC Application Data: GASOLINE ENGINE RECIPROCATING; Ring Set Component Parts: PISTON RING,531491,02978,4; PISTON RING,36044,20978,2; PISTON RING,530677,02978,2; Piston Accommodation Quantity: 2; Standard Bore Diameter: 4.063 INCHES IN. 4 specifications are 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.
NSN 2805-00-516-9443 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.