The Stem,fluid Valve, cataloged under National Stock Number 4820-01-378-3948, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-378-3948 |
| Primary Part Number | 1385789 PIECE 8-2.125 IN. |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Valve Type for Which Designed | GATE |
| Largest Outside Diameter | 1.250 INCHES NOMINAL IN |
| Stem Actuating End Type | SQUARE |
| Material Document and Classification | QQ-N-281,CLASS B FED SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | THREADED |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Material | NICKEL ALLOY R-405 |
| 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 |
|---|---|
| 803-1385789 PIECE 8-2.125 IN. | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 1385789 PIECE 8-2.125 IN. PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 803-1385789 PIE | C/1 Advisory reference — outside the item-of-supply concept Safran Electrical & Power Usa, Llc Dba Labinal Power Sysyems Use CAGE Code 81640 for Cataloging |
| 803-1385789 PIECE 8-2.125 IN. | 5/2 Secondary reference U.S. Government activity |
| 1385789 PIECE N | C/1 Advisory reference — outside the item-of-supply concept Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| 1385789 803 | D/9 Drawing number reference only U.S. Government activity |
| 1385789 PIECE 8-2.125 IN. | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-378-3948 is a Stem,fluid Valve, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-378-3948 has 2 manufacturer part numbers on file: 803-1385789 PIECE 8-2.125 IN. (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1385789 PIECE 8-2.125 IN. (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-378-4250. Verify interchangeability with system specifications before substitution.
Key specifications for 1385789 PIECE 8-2.125 IN.: Valve Type for Which Designed: GATE; Largest Outside Diameter: 1.250 INCHES NOMINAL IN; Stem Actuating End Type: SQUARE; Material Document and Classification: QQ-N-281,CLASS B FED SPEC SINGLE MATERIAL RESPONSE. 7 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.