The Guide,valve Stem, cataloged under National Stock Number 2805-00-752-1811, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-752-1811 |
| Primary Part Number | 7521811 |
| 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 |
| Shoulder Second Fillet Radius | 0.031 INCHES NOMINAL IN |
| Countersink Angle in Deg | 45.0 |
| FSC Application Data | ENGINE,GASOLINE,NONAIRCRAFT |
| Aa End Chamfer Angle in Deg | 45.0 |
| Aa End Chamfer Length | 0.016 INCHES NOMINAL IN |
| Major Diameter Length | 2.094 INCHES NOMINAL IN |
| Taper Minor Diameter | 0.684 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN |
| Style Designator | STEPPED-STEPPED TAPERED SHANK END |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 0.6885 INCHES MINIMUM AND 0.6890 INCHES MAXIMUM IN |
| Countersink Length | 0.030 INCHES MINIMUM IN |
| Countersink Length | 0.040 INCHES MAXIMUM IN |
| Taper Length | 0.063 INCHES MAXIMUM IN |
| Length From Aa End to Largest Diameter Face | 0.688 INCHES NOMINAL IN |
| Aa End Diameter | 0.665 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN |
| Bb End Radius | 0.016 INCHES NOMINAL IN |
| Bore Diameter | 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Bore Countersink | INCLUDED |
| Countersink Location | AA END AND BB END |
| 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 |
|---|---|
| 7521811 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 678A4 | 3/9 Design control — primary reference Diamond Reo Truck Co |
| 913572 | 5/9 Secondary reference Sasco Inc Canadian Div |
NSN 2805-00-752-1811 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 2805-00-752-1811 has 1 manufacturer part number on file: 7521811 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7521811: Shoulder Second Fillet Radius: 0.031 INCHES NOMINAL IN; Countersink Angle in Deg: 45.0; FSC Application Data: ENGINE,GASOLINE,NONAIRCRAFT; Aa End Chamfer Angle in Deg: 45.0. 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.