The Guide,valve Stem, cataloged under National Stock Number 4820-01-487-8388, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-487-8388 |
| Primary Part Number | 254844 PC 14 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Major Diameter Length | 0.188 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.062 INCHES NOMINAL IN |
| Bb End Chamfer Angle in Deg | 45.0 |
| Bb End Radius | 0.125 INCHES NOMINAL IN |
| Bore Diameter | 0.5010 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Shoulder First Fillet Radius | 0.062 INCHES NOMINAL IN |
| 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 |
|---|---|
| 254844 PC 14 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 254844 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-487-8388 is a Guide,valve Stem, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-487-8388 has 1 manufacturer part number on file: 254844 PC 14 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 254844 PC 14: Major Diameter Length: 0.188 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED; Overall Length: 0.875 INCHES NOMINAL IN; Outside Diameter: 1.000 INCHES NOMINAL IN. 9 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.