The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-106-2018, 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 15 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4520-00-106-2018 |
| Primary Part Number | 1-112639 |
| 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 |
| Terminal Quantity | 2 |
| Length | 14.120 INCHES MINIMUM AND 14.500 INCHES MAXIMUM IN |
| Voltage in Volts and Current Type | 208.0 AC SINGLE VOLTAGE |
| Body Style | FINNED, TUBULAR, U SHAPED |
| Maximum Wattage Rating in Watts | 1750.0 SINGLE VOLTAGE |
| Terminal Length | 0.312 INCHES MINIMUM IN |
| Mounting Facility Length | 0.620 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Mounting Method Style | AXIAL STUD TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.438 INCHES MOUNTING FACILITY IN |
| Heat Quantity | 1 |
| Material | NICKEL ALLOY SHEATH |
| Thread Series Designator | UNEF MOUNTING FACILITY |
| Thread Quantity | 28.0 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 |
|---|---|
| 1-112639 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 202844 | 5/9 Secondary reference Triumph Thermal Systems - Maryland, Inc. |
| 13216E0021 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4520-00-106-2018 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 4520-00-106-2018 has 1 manufacturer part number on file: 1-112639 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-053-6075. Verify interchangeability with system specifications before substitution.
Key specifications for 1-112639: Terminal Quantity: 2; Length: 14.120 INCHES MINIMUM AND 14.500 INCHES MAXIMUM IN; Voltage in Volts and Current Type: 208.0 AC SINGLE VOLTAGE; Body Style: FINNED, TUBULAR, U SHAPED. 15 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.