# NSN 4520-00-740-3428: Heating Element, Electrical, Immer

NSN 4520-00-740-3428 (also written 4520007403428; NIIN 00-740-3428) is a heating element, electrical, immer in Federal Supply Class 4520, Space and Water Heating Equipment. 5 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 4520-00-740-3428 (4520007403428)
- NIIN: 00-740-3428 (007403428)
- Item name: HEATING ELEMENT,ELECTRICAL,IMMER
- Federal Supply Class: [FSC 4520 Space and Water Heating Equipment](https://nsnexplorer.com/fsc/4520/)
- Federal Supply Group: [FSG 45](https://nsnexplorer.com/group/45/)
- Acquisition method suffix code: AMSC P: the government does not own the rights to the data needed for more sources. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| BHHK | ELEMENT QUANTITY | 3 |
| AAQL | BODY STYLE | — |
| AARA | TERMINAL QUANTITY | 6 |
| ABNR | HEAT QUANTITY | 1 |
| ABRY | LENGTH | INCHES NOMINAL 12.000 |
| AALX | MOUNTING METHOD STYLE | — |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 0.406 |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 14.875 |
| ABJA | ELEMENT RADIATION SPECTRUM | NONINFRARED |
| ABJS | ELEMENT CONNECTION STYLE | — |
| ABJT | TERMINAL LENGTH | INCHES NOMINAL 0.812 |
| ABKG | BOLT CIRCLE DIAMETER | INCHES NOMINAL 4.875 |
| ABKK | FLANGE DIAMETER | INCHES NOMINAL 5.750 |
| ABKT | HOLE OR SLOT QUANTITY | 6 |
| ABKU | FLANGE THICKNESS | INCHES NOMINAL 0.375 |
| CQJX | NOMINAL THREAD SIZE | STUD INCHES 0.190 |
| AZQH | MAXIMUM WATTAGE RATING IN WATTS | 6000.0 |
| CQRN | THREAD QUANTITY | STUD PER INCH 32.0 |
| CSBH | VOLTAGE IN VOLTS AND CURRENT TYPE | SINGLE VOLTAGE AC 440.0 |
| FAAZ | PHASE | SINGLE VOLTAGE THREE |
| FREQ | FREQUENCY IN HERTZ | 60.0 |
| MATT | MATERIAL | RESISTANCE WIRE NICKEL ALLOY |
| MATT | MATERIAL | SHEATH COPPER |
| THSD | THREAD SERIES DESIGNATOR | STUD UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 155-043628-001 | 07131 | CHROMALOX INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 17714PC11 | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5G6443 | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5G6443 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5G6443ES | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-19 | $4,722.83 | 70 | ARGO TURBOSERVE CORPORATION DIV ARGO TURBOSERVE CORP. | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520007403428) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-19 | [SPE8E926P1348](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520007403428) | HEATING ELEMENT, ELE | ARGO TURBOSERVE CORPORATION DIV ARGO TURBOSERVE CORP. | $330,598.10 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520007403428&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520007403428
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4520-00-740-3428/
JSON: https://nsnexplorer.com/api/nsn/4520-00-740-3428.json