The Valve,poppet,engine, cataloged under National Stock Number 2805-00-271-9072, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-271-9072 |
| Primary Part Number | 58108A |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Distance From Hole Center to Stem End | 0.1562 INCHES NOMINAL IN |
| Stem Diameter | 0.2470 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM IN |
| FSC Application Data | GASOLINE ENGINE |
| Head Height | 0.1240 INCHES MINIMUM AND 0.1440 INCHES MAXIMUM IN |
| Stem Length | 2.9770 INCHES MINIMUM AND 2.9820 INCHES MAXIMUM IN |
| Seat Angle in Deg | 30.0 |
| Chamfer Length | 0.0312 INCHES NOMINAL IN |
| Neck Radius | 0.2187 INCHES NOMINAL IN |
| Metallic Hardness Rating and Location | 37.0 ROCKWELL C NOMINAL TIP |
| Outside Diameter | 1.2450 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN |
| Stem Style | DRILLED |
| Head Style | FLAT |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 45.0 |
| Hole Diameter | 0.1280 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM 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 |
|---|---|
| 58108A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 58108A | 5/9 Secondary reference Hercules Engine Co Inc |
| J4106-1B | 3/2 Design control — primary reference U.S. Government activity |
| IN5022 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-271-9072 is a Valve,poppet,engine, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-271-9072 has 1 manufacturer part number on file: 58108A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 58108A: Distance From Hole Center to Stem End: 0.1562 INCHES NOMINAL IN; Stem Diameter: 0.2470 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM IN; FSC Application Data: GASOLINE ENGINE; Head Height: 0.1240 INCHES MINIMUM AND 0.1440 INCHES MAXIMUM IN. 15 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.