The Stem,fluid Valve, cataloged under National Stock Number 4820-01-143-1485, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Level 10 Industries, Inc. Div Level 10 Industries. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-143-1485 |
| Primary Part Number | 523439 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Level 10 Industries, Inc. Div Level 10 Industries |
| Status | CANCELLED |
| Material | STEEL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 523439 PRIMARY | Level 10 Industries, Inc. Div Level 10 Industries (USA) |
| Reference | Meaning |
|---|---|
| 523439/525422 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| 523439 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| A27061 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| A27061-41 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 523439 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-143-1485 is a Stem,fluid Valve, manufactured by Level 10 Industries, Inc. Div Level 10 Industries, classified under FSC 4820, Valves, Nonpowered. Status: cancelled.
NSN 4820-01-143-1485 has 1 manufacturer part number on file: 523439 (Level 10 Industries, Inc. Div Level 10 Industries).
Key specifications for 523439: End Item Identification: COOPER INDUSTRY PENDANT CONTROL VALVE FOR THEIR 4300 LB LOW HEAD DRILL HOIST,NUMEROUS MODELS LBS; Material: STEEL. 1 specification is 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.
NSN 4820-01-143-1485 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.