The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-00-121-1840, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Tyco Electronic Components Ltd. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 — Resistor (FSG 59) |
| Manufacturers | Tyco Electronic Components Ltd (CAGE K2510) |
| Parameter | Value |
|---|---|
| NSN | 5905-00-121-1840 |
| Primary Part Number | LH25KT20 |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Tyco Electronic Components Ltd |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| LH25KT20 | Tyco Electronic Components Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 9003134 | 3/9 Design control — primary reference Racal Radar Defence Systems Ltd |
| LH25K-T20 | C/1 Advisory reference — outside the item-of-supply concept General Hybrid Ltd |
| 9003134 | C/1 Advisory reference — outside the item-of-supply concept Thales Uk Limited Dba Thales Uk Ltd Defence Mission Systems |
| 403-3380 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 9003134 | 5/9 Secondary reference Thales Security Systems Uk Limited |
NSN 5905-00-121-1840 is a Resistor,variable,nonwire Wound,, manufactured by Tyco Electronic Components Ltd, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-121-1840 has 1 manufacturer part number on file: LH25KT20 (Tyco Electronic Components Ltd).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-661-6252. Verify interchangeability with system specifications before substitution.
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.