The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-687-6912, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leonardo Spa Aeronautics Division - Venegono Superiore Site. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-687-6912 |
| Primary Part Number | BL501D2J-5 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leonardo Spa Aeronautics Division - Venegono Superiore Site |
| Status | ACTIVE |
| Second End Raised Face Height | 40.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| BL501D2J-5 | Leonardo Spa Aeronautics Division - Venegono Superiore Site (ITA) |
| Reference | Meaning |
|---|---|
| BL501D2J-5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-687-6912 is a Valve,regulating,fluid Pressure, manufactured by Leonardo Spa Aeronautics Division - Venegono Superiore Site, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-687-6912 has 1 manufacturer part number on file: BL501D2J-5 (Leonardo Spa Aeronautics Division - Venegono Superiore Site).
Key specifications for BL501D2J-5: Second End Raised Face Height: 40.0 MILLIMETERS NOMINAL MM; Overall Length: 73.0 MILLIMETERS NOMINAL MM; Overall Width: 25.8 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: ZERO SETTING VALVE. 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.
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.