The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-892-2132, 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 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-892-2132 |
| Primary Part Number | ASK42566-1 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Phase | NOT RATED SINGLE VOLTAGE |
| Terminal Quantity | 2 |
| Length | 18.938 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 254.0 DC SINGLE VOLTAGE |
| Body Style | TUBULAR, THREADED TERMINALS |
| Maximum Wattage Rating in Watts | 900.0 SINGLE VOLTAGE |
| Terminal Length | 0.688 INCHES NOMINAL IN |
| Mounting Facility Length | 0.938 INCHES NOMINAL IN |
| Element Connection Style | HERMETICALLY SEALED STUD |
| Effective Heating Length | 48.625 INCHES NOMINAL IN |
| Mounting Method Style | AXIAL STUD TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.250 INCHES STUD IN |
| Nominal Thread Size | 0.375 INCHES MOUNTING FACILITY IN |
| Heat Quantity | 1 |
| Watt Density Rating | 13.4 PER SQUARE INCH SINGLE VOLTAGE |
| Element Radiation Spectrum | NONINFRARED |
| Material | CHROMIUM AND NICKEL RESISTANCE WIRE |
| Material | COPPER AND NICKEL SHEATH |
| Thread Series Designator | UNF STUD |
| Thread Series Designator | NPT MOUNTING FACILITY |
| Thread Quantity | 28.0 PER INCH STUD |
| Thread Quantity | 18.0 PER INCH MOUNTING FACILITY |
| Element Quantity | 1 |
| 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 |
|---|---|
| ASK42566-1 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| 1-42566 | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| C1617-1 | 5/9 Secondary reference Truheat Inc. |
NSN 4520-00-892-2132 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-892-2132 has 2 manufacturer part numbers on file: ASK42566-1 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 1-42566 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
1 possible match (shared part number, not a government interchangeability claim): 3020-00-934-9677. Verify interchangeability with system specifications before substitution.
Key specifications for ASK42566-1: Phase: NOT RATED SINGLE VOLTAGE; Terminal Quantity: 2; Length: 18.938 INCHES NOMINAL IN; Voltage in Volts and Current Type: 254.0 DC SINGLE VOLTAGE. 23 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.