The Valve,poppet,engine, cataloged under National Stock Number 2805-00-705-8668, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 20 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-705-8668 |
| Primary Part Number | 7058668 |
| Item Name | Valve,poppet,engine |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Stem Diameter | 0.4337 INCHES MINIMUM AND 0.4345 INCHES MAXIMUM IN |
| FSC Application Data | GASOLINE ENGINE |
| Head Height | 0.2080 INCHES MINIMUM AND 0.2180 INCHES MAXIMUM IN |
| Stem Length | 5.3495 INCHES MINIMUM AND 5.3735 INCHES MAXIMUM IN |
| Seat Angle in Deg | 45.0 |
| Chamfer Length | 0.0150 INCHES NOMINAL IN |
| Neck Radius | 0.5000 INCHES NOMINAL IN |
| Groove Diameter | 0.3740 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM 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 | 30.0 ROCKWELL C MINIMUM HEAD |
| Metallic Hardness Rating and Location | 40.0 ROCKWELL C MAXIMUM HEAD |
| Metallic Hardness Rating and Location | 65.0 SHORE SCLEROSCOPE MINIMUM TIP |
| Distance From Groove to Stem End | 0.1710 INCHES NOMINAL IN |
| Outside Diameter | 1.8950 INCHES MINIMUM AND 1.9050 INCHES MAXIMUM IN |
| Stem Style | GROOVED |
| Head Style | CONCAVE |
| Carbon Relief Groove | NOT INCLUDED |
| Chamfer Angle in Deg | 45.0 |
| Groove Width | 0.3150 INCHES MINIMUM AND 0.3250 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 |
|---|---|
| 7058668 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| GG6507B3 | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| GG6057B3 | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| GG6057B3 | 5/9 Secondary reference Ford Motor Company |
| GG6507B3 | 5/9 Secondary reference Ford Motor Company |
NSN 2805-00-705-8668 is a Valve,poppet,engine, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-705-8668 has 1 manufacturer part number on file: 7058668 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7058668: Stem Diameter: 0.4337 INCHES MINIMUM AND 0.4345 INCHES MAXIMUM IN; FSC Application Data: GASOLINE ENGINE; Head Height: 0.2080 INCHES MINIMUM AND 0.2180 INCHES MAXIMUM IN; Stem Length: 5.3495 INCHES MINIMUM AND 5.3735 INCHES MAXIMUM IN. 20 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.