The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-516-5787, 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 R.h. Industries, Inc.. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2805-00-516-5787 |
| Primary Part Number | 5558P010 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | R.h. Industries, Inc. |
| Status | ACTIVE |
| FSC Application Data | ENGINE,GASOLINE,RECIPROCATING NONAIRCRAFT |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0950 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| Distance Between Pin Bosses | 1.125 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NUMBER 1,NUMBER 2,NUMBER 3 AND NUMBER 4 PISTON ALL RINGS |
| Oil Passage Type | HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 2.750 INCHES NOMINAL IN |
| Ring Groove Diameter | 2.444 INCHES MINIMUM AND 2.468 INCHES MAXIMUM FIRST RING IN |
| Distance From Pin Hole Center to Extreme Top | 1.250 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Oversize | 0.010 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 0.7495 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SOLID |
| 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 |
|---|---|
| 5558P010 PRIMARY | R.h. Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5558P010 | 5/9 Secondary reference Botoman Mfg Co Inc |
NSN 2805-00-516-5787 is a Piston,internal Combustion Engin, manufactured by R.h. Industries, Inc., classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-516-5787 has 1 manufacturer part number on file: 5558P010 (R.h. Industries, Inc.).
Key specifications for 5558P010: Overall Height: 2.250 INCHES NOMINAL IN; FSC Application Data: ENGINE,GASOLINE,RECIPROCATING NONAIRCRAFT; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0950 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN. 24 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.