The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-385-8973, 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 Carrier Corp. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-385-8973 |
| Primary Part Number | HT31AZ121 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Voltage in Volts and Current Type | 120.0 AC SINGLE VOLTAGE |
| Maximum Wattage Rating in Watts | 200.0 SINGLE VOLTAGE |
| Heat Quantity | 1 |
| Element Radiation Spectrum | NONINFRARED |
| 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 |
|---|---|
| HT31AZ121 PRIMARY | Carrier Corp (USA) |
| 5H-FREON-64 | Carrier Corp (USA) |
| 330-J26-300 ITEM 46 | Carrier Corp (USA) |
| HT31AZ121 | Carrier Consumer Products Div of Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 51450039 | 5/9 Secondary reference Saab Kockums Ab - Karlskrona |
NSN 4520-01-385-8973 is a Heating Element,electrical,immer, manufactured by Carrier Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-385-8973 has 4 manufacturer part numbers on file: HT31AZ121 (Carrier Corp), 5H-FREON-64 (Carrier Corp), 330-J26-300 ITEM 46 (Carrier Corp), HT31AZ121 (Carrier Consumer Products Div of Carrier Corp).
Key specifications for HT31AZ121: Frequency in Hertz: 60.0; Voltage in Volts and Current Type: 120.0 AC SINGLE VOLTAGE; Maximum Wattage Rating in Watts: 200.0 SINGLE VOLTAGE; Heat Quantity: 1. 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.