# NSN 4520-01-546-1012: Heating Element, Electrical, Immer

NSN 4520-01-546-1012 (also written 4520015461012; NIIN 01-546-1012) is a heating element, electrical, immer in Federal Supply Class 4520, Space and Water Heating Equipment. 3 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4520-01-546-1012 (4520015461012)
- NIIN: 01-546-1012 (015461012)
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AALX | MOUNTING METHOD STYLE | — |
| AAQL | BODY STYLE | — |
| AARA | TERMINAL QUANTITY | 6 |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 0.406 |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 18.750 |
| ABJA | ELEMENT RADIATION SPECTRUM | NONINFRARED |
| AGAV | END ITEM IDENTIFICATION | HEATER WTR ELEC 17749T5 |
| BHHK | ELEMENT QUANTITY | 1 |
| CRTL | CRITICALITY CODE JUSTIFICATION | AGAV |
| MATT | MATERIAL | SHEATH STEEL CORROSION RESISTING |
| ABKT | HOLE OR SLOT QUANTITY | 6 |
| ABKU | FLANGE THICKNESS | INCHES NOMINAL 0.375 |
| ABRY | LENGTH | INCHES MINIMUM 15.375 AND INCHES MAXIMUM 15.875 |
| ABKG | BOLT CIRCLE DIAMETER | INCHES NOMINAL 4.875 |
| ABKK | FLANGE DIAMETER | INCHES NOMINAL 5.750 |
| ABJS | ELEMENT CONNECTION STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 044239001 | 65586 | CHROMALOX INC DBA CHROMALOX PRECISION HEAT AND CONTROL, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 17749 REV A SH 4 PC 11 | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| F124403SS | 65586 | CHROMALOX INC DBA CHROMALOX PRECISION HEAT AND CONTROL, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520015461012&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520015461012
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/4520-01-546-1012/
JSON: https://nsnexplorer.com/api/nsn/4520-01-546-1012.json