The Valve,poppet,engine, cataloged under National Stock Number 2805-00-516-7209, 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 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-516-7209 |
| Primary Part Number | 30559-A |
| 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 |
| Stem Diameter | 0.4970 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM IN |
| FSC Application Data | GASOLINE ENGINE |
| Head Height | 0.2812 INCHES NOMINAL IN |
| Stem Length | 8.8282 INCHES NOMINAL IN |
| Distance From Slot to Stem End | 0.2500 INCHES NOMINAL IN |
| Seat Angle in Deg | 60.0 |
| Chamfer Length | 0.0312 INCHES NOMINAL IN |
| Neck Radius | 0.5625 INCHES NOMINAL IN |
| Metallic Hardness Rating and Location | 50.0 SHORE SCLEROSCOPE MINIMUM STEM |
| Outside Diameter | 2.4325 INCHES MINIMUM AND 2.4425 INCHES MAXIMUM IN |
| Stem Style | SLOTTED |
| Slot Radius | 0.0937 INCHES NOMINAL IN |
| Head Style | CONCAVE |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 45.0 |
| Slot Width | 0.1880 INCHES MINIMUM AND 0.1920 INCHES MAXIMUM IN |
| Slot Length | 0.3910 INCHES MINIMUM AND 0.3990 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 |
|---|---|
| 30559 | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 30559-A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 30559-A | 5/9 Secondary reference Hercules Engine Co Inc |
| 30559 | 5/9 Secondary reference Hercules Engine Co Inc |
| V795 | 5/9 Secondary reference Dana Corp Engine Products Div |
NSN 2805-00-516-7209 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 2805-00-516-7209 has 2 manufacturer part numbers on file: 30559 (Brinkley Technology Group Llc Dba Hercules Manufacturing), 30559-A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
5 possible matches (shared part number, not a government interchangeability claim): 5950-01-149-9303, 5930-01-263-8596, 4820-01-382-2016. Verify interchangeability with system specifications before substitution.
Key specifications for 30559-A: Stem Diameter: 0.4970 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM IN; FSC Application Data: GASOLINE ENGINE; Head Height: 0.2812 INCHES NOMINAL IN; Stem Length: 8.8282 INCHES NOMINAL IN. 17 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.