The Guide,valve Stem, cataloged under National Stock Number 2815-00-678-3203, is classified within Federal Supply Class 2815 (Diesel Engines 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 24 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2815-00-678-3203 |
| Primary Part Number | 8725003 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shoulder Second Fillet Radius | 0.062 INCHES NOMINAL IN |
| Countersink Angle in Deg | 90.0 |
| Aa End Chamfer Angle in Deg | 45.0 |
| Countersink Diameter | 0.562 INCHES NOMINAL IN |
| Aa End Chamfer Length | 0.031 INCHES NOMINAL IN |
| Major Diameter Length | 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Bb End Shank Diameter | 0.689 INCHES NOMINAL IN |
| Style Designator | PLAIN-STEPPED SHOULDER |
| Material Document and Classification | QQ-B-679, COMP 2 FED SPEC SINGLE MATERIAL RESPONSE |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 1.125 INCHES NOMINAL IN |
| Shoulder Diameter | 0.778 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN |
| Fillet Step Radius | 0.031 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.031 INCHES NOMINAL IN |
| Length From Aa End to Largest Diameter Face | 1.302 INCHES MINIMUM AND 1.308 INCHES MAXIMUM IN |
| Aa End Diameter | 0.745 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Bb End Chamfer Angle in Deg | 45.0 |
| Bore Diameter | 0.4830 INCHES MINIMUM AND 0.4850 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Shoulder First Fillet Radius | 0.031 INCHES NOMINAL IN |
| Shoulder Length | 0.160 INCHES NOMINAL IN |
| Metallic Hardness Rating | 85.0 MINIMUM ROCKWELL B |
| 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 |
NSN 2815-00-678-3203 is a Guide,valve Stem, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-678-3203 has 3 manufacturer part numbers on file: 8725003 (Satair A/s), 8725003 (Renk America Llc Div Renk America), 8725003 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8725003: Shoulder Second Fillet Radius: 0.062 INCHES NOMINAL IN; Countersink Angle in Deg: 90.0; Aa End Chamfer Angle in Deg: 45.0; Countersink Diameter: 0.562 INCHES NOMINAL IN. 24 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.