The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-374-9700, 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 Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-374-9700 |
| Primary Part Number | 220441D |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| FSC Application Data | PISTON GROUP,GASOLINE ENGINE,NONAIRCRAFT |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0960 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.0970 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.3115 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM THIRD RING IN |
| Distance Between Pin Bosses | 1.500 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | SLOT LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 4.000 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.546 INCHES MINIMUM AND 3.556 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 3.546 INCHES MINIMUM AND 3.556 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 3.562 INCHES MINIMUM AND 3.572 INCHES MAXIMUM THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.088 INCHES MINIMUM AND 2.092 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 3 |
| Skirt Bottom Cutaway Feature | INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 1.4380 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Skirt Type | SOLID |
| Cut Depth | 0.400 INCHES NOMINAL 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 |
|---|---|
| 220441D PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 220447AS | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 220447CS | Renk America Llc Div Renk America (USA) |
| Reference | Meaning |
|---|---|
| 220441D | 5/9 Secondary reference Hercules Engine Co Inc |
| 57302A | 5/9 Secondary reference Hyster-Yale Group, Inc. |
| M363A04001E | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| M363A4001E | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| MS13954-1 | 5/9 Secondary reference U.S. Government activity |
| 00195404 | 5/9 Secondary reference Dresser, Llc |
| 220447AS | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 2805-00-374-9700 is a Piston,internal Combustion Engin, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-374-9700 has 3 manufacturer part numbers on file: 220441D (Brinkley Technology Group Llc Dba Hercules Manufacturing), 220447AS (Brinkley Technology Group Llc Dba Hercules Manufacturing), 220447CS (Renk America Llc Div Renk America).
1 possible match (shared part number, not a government interchangeability claim): 2805-00-388-6644. Verify interchangeability with system specifications before substitution.
Key specifications for 220441D: Overall Height: 3.730 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN; FSC Application Data: PISTON GROUP,GASOLINE ENGINE,NONAIRCRAFT; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0960 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM SECOND RING IN. 28 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.