The Resistor Switch Assembly, cataloged under National Stock Number 4920-00-470-3789, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Avtron Aerospace Inc. 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-470-3789 |
| Primary Part Number | B3194 |
| Item Name | Resistor Switch Assembly |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Avtron Aerospace Inc |
| Status | ACTIVE |
| General Characteristics Item Description | COMPOSED OF RESISTOR VARIABLE,SENSITIVE SWITCH,AND SWITCH CONTROL |
| 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 |
|---|---|
| B3194 PRIMARY | Avtron Aerospace Inc (USA) |
NSN 4920-00-470-3789 is a Resistor Switch Assembly, manufactured by Avtron Aerospace Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-470-3789 has 1 manufacturer part number on file: B3194 (Avtron Aerospace Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5950-00-601-9578, 5340-01-261-1728. Verify interchangeability with system specifications before substitution.
Key specifications for B3194: General Characteristics Item Description: COMPOSED OF RESISTOR VARIABLE,SENSITIVE SWITCH,AND SWITCH CONTROL. 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.