The Valve,plug, cataloged under National Stock Number 4820-00-323-8522, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-323-8522 |
| Primary Part Number | 8674383 |
| Item Name | Valve,plug |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES THIRD END |
| Flange Face Design | PLAIN THIRD END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) SECOND END |
| Bolt Circle Nominal Diameter | 3.375 INCHES THIRD END IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | FLANGE THIRD END |
| Bolt Hole Nominal Diameter | 0.281 INCHES THIRD END IN |
| Flow Style | THREE -WAY THREE PORT 360 DEGREE PLUG TURN |
| Features Provided | NONADJUSTABLE ROTATION |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.250 INCHES FIRST END IN |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Outside Diameter | 4.000 INCHES THIRD END IN |
| Mounting Facility | THREADED FASTENER |
| Bolt Hole Quantity | 6 THIRD END |
| Material | STEEL SEAT |
| Material | STEEL STEM |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | NPTF SECOND END |
| Thread Series Designator | NPTF FIRST END |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 0.687 INCHES THIRD END 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 |
|---|---|
| 8674383 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 48000-11 | 3/2 Design control — primary reference U.S. Government activity |
| 8674383 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-323-8522 is a Valve,plug, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-323-8522 has 1 manufacturer part number on file: 8674383 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8674383: Flange Shape: ROUND WITH HOLES THIRD END; Flange Face Design: PLAIN THIRD END; Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST END; Connection Style: PLAIN,OPTIONAL END(PIPE) SECOND END. 25 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.