The Housing,flapper Valve, cataloged under National Stock Number 4820-00-008-3758, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-008-3758 |
| Primary Part Number | 14-52512-1 |
| Item Name | Housing,flapper Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY PER QQ-A-225/2 ALLOY 3003,6.550 IN. LG,5.305 IN. H,4.125 IN. W,0.193 IN. DIA 3 HOLES ON 4.000 IN. BOLT CIRCLE,TO ASSEMBLE WITH PART NO. 14-52513 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 |
|---|---|
| 14-52512-1 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 14-52512-1 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 14-52512-1 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 4820-00-008-3758 is a Housing,flapper Valve, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-008-3758 has 2 manufacturer part numbers on file: 14-52512-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 14-52512-1 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-499-5443. Verify interchangeability with system specifications before substitution.
Key specifications for 14-52512-1: General Characteristics Item Description: ALUMINUM ALLOY PER QQ-A-225/2 ALLOY 3003,6.550 IN. LG,5.305 IN. H,4.125 IN. W,0.193 IN. DIA 3 HOLES ON 4.000 IN. BOLT CIRCLE,TO ASSEMBLE WITH PART NO. 14-52513 IN. 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.