The Valve,poppet,engine, cataloged under National Stock Number 2805-00-363-8735, 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 Fwd Seagrave Holdings Lp. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-363-8735 |
| Primary Part Number | 1A90136C |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Fwd Seagrave Holdings Lp |
| Status | ACTIVE |
| Stem Diameter | 0.3715 INCHES MINIMUM AND 0.3720 INCHES MAXIMUM IN |
| FSC Application Data | GASOLINE ENGINE |
| Head Height | 0.1870 INCHES MINIMUM AND 0.2020 INCHES MAXIMUM IN |
| Second Groove Width | 0.0940 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM IN |
| Stem Length | 5.1090 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0290 INCHES NOMINAL IN |
| Neck Radius | 0.3125 INCHES NOMINAL IN |
| Metallic Hardness Rating and Location | 40.0 ROCKWELL C MAXIMUM STEM |
| Metallic Hardness Rating and Location | 30.0 ROCKWELL C MINIMUM STEM |
| Metallic Hardness Rating and Location | 48.0 ROCKWELL C MINIMUM TIP |
| Outside Diameter | 1.4320 INCHES MINIMUM AND 1.4420 INCHES MAXIMUM IN |
| Distance From First Groove to Stem End | 0.2140 INCHES MINIMUM AND 0.2190 INCHES MAXIMUM IN |
| Stem Style | DOUBLE GROOVED |
| First Groove Diameter | 0.3020 INCHES MINIMUM AND 0.3080 INCHES MAXIMUM IN |
| Head Style | INVERTED CONE |
| Distance From Second Groove to Stem End | 0.5250 INCHES MINIMUM AND 0.5320 INCHES MAXIMUM IN |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 30.0 |
| Second Groove Diameter | 0.3020 INCHES MINIMUM AND 0.3080 INCHES MAXIMUM IN |
| First Groove Width | 0.0940 INCHES MINIMUM AND 0.0990 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 |
|---|---|
| 1A90136C PRIMARY | Fwd Seagrave Holdings Lp (USA) |
| Reference | Meaning |
|---|---|
| 7099854 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 90136C | 5/9 Secondary reference Dresser, Llc |
| 90136 | 5/9 Secondary reference Dresser, Llc |
NSN 2805-00-363-8735 is a Valve,poppet,engine, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-363-8735 has 1 manufacturer part number on file: 1A90136C (Fwd Seagrave Holdings Lp).
4 possible matches (shared part number, not a government interchangeability claim): 5330-00-620-3829, 5305-01-027-5237, 4920-01-300-2038. Verify interchangeability with system specifications before substitution.
Key specifications for 1A90136C: Stem Diameter: 0.3715 INCHES MINIMUM AND 0.3720 INCHES MAXIMUM IN; FSC Application Data: GASOLINE ENGINE; Head Height: 0.1870 INCHES MINIMUM AND 0.2020 INCHES MAXIMUM IN; Second Groove Width: 0.0940 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM IN. 21 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.