The Guide,valve Stem, cataloged under National Stock Number 2805-00-040-0866, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-040-0866 |
| Primary Part Number | 7708253 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Aa End Chamfer Angle in Deg | 45.0 |
| Aa End Chamfer Length | 0.030 INCHES NOMINAL IN |
| Major Diameter Length | 0.140 INCHES NOMINAL IN |
| Bb End Shank Diameter | 0.300 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | SAE 1112 THRU 1117 ASSN STD SINGLE MATERIAL RESPONSE |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 1.200 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.100 INCHES NOMINAL IN |
| Bb End Chamfer Angle in Deg | 30.0 |
| Material | STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1116 OR STEEL COMP 1117 |
| Bore Countersink | NOT INCLUDED |
| 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 |
|---|---|
| 7708253 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 7708253 | 5/9 Secondary reference Lasmer Industries Inc |
NSN 2805-00-040-0866 is a Guide,valve Stem, 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 2805-00-040-0866 has 1 manufacturer part number on file: 7708253 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7708253: Aa End Chamfer Angle in Deg: 45.0; Aa End Chamfer Length: 0.030 INCHES NOMINAL IN; Major Diameter Length: 0.140 INCHES NOMINAL IN; Bb End Shank Diameter: 0.300 INCHES NOMINAL IN. 12 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.