The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-187-2832, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-187-2832 |
| Primary Part Number | L5840179-121 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Body Style | STRAIGHT THRU |
| First End Seat Angle in Deg | 30.0 |
| First End Thread Class | 3A A |
| First End Style Designator | INVERTED FLARE |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Media for Which Designed | HYDRAULIC FLUID, MIL-H-5606 |
| Thread Size and Series/type Designator | 9/16-20 UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Valve Discharge Flow Rate | 5.2 GALLONS PER MINUTE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| L5840179-121 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 4820-01-187-2832 is a Valve,calibrated Flow, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-187-2832 has 1 manufacturer part number on file: L5840179-121 (The Boeing Company Div Legacy Am&m).
Key specifications for L5840179-121: First End Thread Direction: RIGHT-HAND; Body Style: STRAIGHT THRU; First End Seat Angle in Deg: 30.0; First End Thread Class: 3A A. 10 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.
NSN 4820-01-187-2832 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.