The Stem and Pilot Assembly, cataloged under National Stock Number 4820-01-193-3452, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-193-3452 |
| Primary Part Number | 3M-5433-1 PART 5 AND 5A |
| Item Name | Stem and Pilot Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
| Status | ACTIVE |
| General Characteristics Item Description | CORROSION RESISTING STEEL |
| 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 |
|---|---|
| 3M-5433-1 PART 5 AND 5A PRIMARY | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company (USA) |
| Reference | Meaning |
|---|---|
| 3M-5433-1 | D/9 Drawing number reference only Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
NSN 4820-01-193-3452 is a Stem and Pilot Assembly, manufactured by Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-193-3452 has 1 manufacturer part number on file: 3M-5433-1 PART 5 AND 5A (Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-199-4470. Verify interchangeability with system specifications before substitution.
Key specifications for 3M-5433-1 PART 5 AND 5A: General Characteristics Item Description: CORROSION RESISTING 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.
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.