The Guide,valve Stem, cataloged under National Stock Number 2815-00-789-6502, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Agco Corp Parts Opn. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-789-6502 |
| Primary Part Number | 4391776 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Agco Corp Parts Opn |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| FSC Application Data | DIESEL ENGINE |
| Aa End Chamfer Angle in Deg | 10.0 |
| Aa End Chamfer Length | 0.094 INCHES NOMINAL IN |
| Major Diameter Length | 2.781 INCHES NOMINAL IN |
| Bb End Shank Diameter | 0.747 INCHES MINIMUM AND 0.748 INCHES MAXIMUM IN |
| Style Designator | PLAIN, SHOULDERED |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 0.751 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Countersink Length | 0.031 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.080 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Bb End Chamfer Angle in Deg | 30.0 |
| Bore Diameter | 0.4375 INCHES NOMINAL IN |
| Material | IRON |
| Metallic Hardness Rating | 90.0 MINIMUM ROCKWELL B |
| Bore Countersink | INCLUDED |
| Countersink Location | AA 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 |
|---|---|
| 4391776 PRIMARY | Agco Corp Parts Opn (USA) |
NSN 2815-00-789-6502 is a Guide,valve Stem, manufactured by Agco Corp Parts Opn, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-789-6502 has 1 manufacturer part number on file: 4391776 (Agco Corp Parts Opn).
Key specifications for 4391776: Countersink Angle in Deg: 45.0; FSC Application Data: DIESEL ENGINE; Aa End Chamfer Angle in Deg: 10.0; Aa End Chamfer Length: 0.094 INCHES NOMINAL IN. 17 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.