The Controller,preheater, cataloged under National Stock Number 4520-01-189-3269, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Chromalox, Inc. Div Chromalox. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-189-3269 |
| Primary Part Number | 0135-26023 |
| Item Name | Controller,preheater |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox, Inc. Div Chromalox |
| Status | ACTIVE |
| General Characteristics Item Description | 20.00 IN. BY 20.00 IN. BY 10.00 IN; STL 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 |
|---|---|
| 0135-26023 PRIMARY | Chromalox, Inc. Div Chromalox (USA) |
| Reference | Meaning |
|---|---|
| 24E506154G2 | 5/9 Secondary reference General Electric Co Aviation Service Seattle of Aviation Service Dept |
| 24E506154 | D/9 Drawing number reference only General Electric Co Aviation Service Seattle of Aviation Service Dept |
| 4520PL1327976 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4520-01-189-3269 is a Controller,preheater, manufactured by Chromalox, Inc. Div Chromalox, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-189-3269 has 1 manufacturer part number on file: 0135-26023 (Chromalox, Inc. Div Chromalox).
Key specifications for 0135-26023: General Characteristics Item Description: 20.00 IN. BY 20.00 IN. BY 10.00 IN; STL 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.