The Ring Set,piston, cataloged under National Stock Number 2805-01-026-3844, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Kalmar AC Inc. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-026-3844 |
| Primary Part Number | 74910025 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING,2; OIL RING,1; SCRAPER RING,1 |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 3.437 INCHES IN |
| 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 |
|---|---|
| F245T00110 | Renk America Llc Div Renk America (USA) |
| 74910025 PRIMARY | Kalmar AC Inc (USA) |
| Reference | Meaning |
|---|---|
| F245T110 | 5/9 Secondary reference Renk America Llc Div Renk America |
NSN 2805-01-026-3844 is a Ring Set,piston, manufactured by Kalmar AC Inc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-026-3844 has 2 manufacturer part numbers on file: F245T00110 (Renk America Llc Div Renk America), 74910025 (Kalmar AC Inc).
Key specifications for 74910025: Ring Set Component Parts: COMPRESSION RING,2; OIL RING,1; SCRAPER RING,1; Piston Accommodation Quantity: 1; Standard Bore Diameter: 3.437 INCHES IN; End Item Identification: GASOLINE ENGINE,MDL F245,TELEDYNE CONTINENTAL MOTORS,GENERAL PRODUCTS DIV,A DIV OF TELEDYNE INDUSTRIES INC. 3 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.
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.