The Heater,space,electric, cataloged under National Stock Number 4520-01-496-1722, 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 Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 6 specifications, 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 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 | 4520-01-496-1722 |
| Primary Part Number | UB23-240 |
| Item Name | Heater,space,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Heat Delivery Rate | 6824.0 BRITISH THERMAL UNIT |
| Diameter | 10.375 INCHES NOMINAL IN |
| Heat Outlet Quantity | 1 |
| Height | 13.500 INCHES NOMINAL IN |
| Mounting Type | CEILING SUSPENDED OR WALL SUSPENDED, ROOM INTERIOR |
| Heating Element Type | ELECTRIC NONIMMERSION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4520-01-496-1722 is a Heater,space,electric, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-496-1722 has 2 manufacturer part numbers on file: 261420 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), UB23-240 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-583-7612. Verify interchangeability with system specifications before substitution.
Key specifications for UB23-240: Heat Delivery Rate: 6824.0 BRITISH THERMAL UNIT; Diameter: 10.375 INCHES NOMINAL IN; Heat Outlet Quantity: 1; Height: 13.500 INCHES NOMINAL IN. 6 specifications are 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.