The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-700-5463, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-700-5463 |
| Primary Part Number | 42099CS020 |
| 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 | GASOLINE ENGINE,NONAIRCRAFT |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Width | 0.1265 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM FIRST RING IN |
| Distance Between Pin Bosses | 1.062 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Supplementary Features | OIL PASSAGE HOLE |
| Diameter | 4.000 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.5715 INCHES MINIMUM AND 3.5855 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Diameter | 3.6115 INCHES MINIMUM AND 3.6255 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 3.6115 INCHES MINIMUM AND 3.6255 INCHES MAXIMUM SECOND RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.182 INCHES MINIMUM AND 2.192 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | LOCKING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Oversize | 0.020 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 0.9980 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM 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 |
|---|---|
| 7005463 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 42099CS020 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 670093 | 5/9 Secondary reference Sasco Inc Canadian Div |
| SY7037 | 5/2 Secondary reference U.S. Government activity |
| 42099CS020 | 5/9 Secondary reference Hercules Engine Co Inc |
| 5Y7037 | 5/2 Secondary reference U.S. Government activity |
| 409565 | 5/9 Secondary reference White Motor Corp |
NSN 2805-00-700-5463 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 2805-00-700-5463 has 2 manufacturer part numbers on file: 7005463 (U S Army Tank Automotive Command Amsta-Im-Mm), 42099CS020 (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 42099CS020: Overall Height: 4.188 INCHES NOMINAL IN; FSC Application Data: GASOLINE ENGINE,NONAIRCRAFT; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1255 INCHES MINIMUM AND 0.1265 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.