The Guide,valve Stem, cataloged under National Stock Number 4820-01-618-3030, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-618-3030 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Aa End Chamfer Angle in Deg | 45.0 |
| Aa End Chamfer Length | 0.03 INCHES NOMINAL IN |
| Major Diameter Length | 0.82 INCHES NOMINAL IN |
| Bb End Shank Diameter | 1.13 INCHES NOMINAL IN |
| Style Designator | PLAIN, SHOULDERED |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 1.62 INCHES NOMINAL IN |
| Aa End Radius | 45.0 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.03 INCHES NOMINAL IN |
| Bb End Chamfer Angle in Deg | 7.0 |
| Bb End Radius | 0.010 INCHES NOMINAL IN |
| Bore Diameter | 0.81 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Shoulder First Fillet Radius | 15.0 INCHES NOMINAL IN |
| 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 |
| Reference | Meaning |
|---|---|
| 112565DE | 3/2 Design control — primary reference U.S. Government activity |
| PLC-13514-2 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-618-3030 is a Guide,valve Stem, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-618-3030: Aa End Chamfer Angle in Deg: 45.0; Aa End Chamfer Length: 0.03 INCHES NOMINAL IN; Major Diameter Length: 0.82 INCHES NOMINAL IN; Bb End Shank Diameter: 1.13 INCHES NOMINAL IN. 15 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.