# NSN 4520-01-257-9763: Heating Element, Electrical, Immer

NSN 4520-01-257-9763 (also written 4520012579763; NIIN 01-257-9763) is a heating element, electrical, immer in Federal Supply Class 4520, Space and Water Heating Equipment. 5 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4520-01-257-9763 (4520012579763)
- NIIN: 01-257-9763 (012579763)
- 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 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAQL | BODY STYLE | — |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 17.312 |
| ABHS | EFFECTIVE HEATING LENGTH | INCHES NOMINAL 6.688 |
| ABJA | ELEMENT RADIATION SPECTRUM | NONINFRARED |
| ABJM | HEAT CONTROL TYPE | THERMOCOUPLE |
| ABJS | ELEMENT CONNECTION STYLE | — |
| ABNR | HEAT QUANTITY | 1 |
| ABNT | CONDUIT OPENING SIZE | INCHES NOMINAL 0.750 |
| ABRY | LENGTH | INCHES NOMINAL 10.750 |
| AZQH | MAXIMUM WATTAGE RATING IN WATTS | 1000.0 |
| BHHK | ELEMENT QUANTITY | 3 |
| CSBH | VOLTAGE IN VOLTS AND CURRENT TYPE | SINGLE VOLTAGE AC 440.0 |
| FAAZ | PHASE | SINGLE VOLTAGE THREE |
| FEAT | SPECIAL FEATURES | MOISTURE RESISTANT TERMINAL ENCLOSURE |
| MATT | MATERIAL | SHEATH STEEL CORROSION RESISTING |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SHEATH MIL SPEC SINGLE MATERIAL RESPONSE -IL-S-22577B |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 155-073168-000 | 07131 | CHROMALOX INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 155-073168-002 | 07131 | CHROMALOX INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 155-073168-002 | 65586 | CHROMALOX INC DBA CHROMALOX PRECISION HEAT AND CONTROL, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TMOSS-3E4XX | 07131 | CHROMALOX INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TMOSS-3E4XX | 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=4520012579763&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520012579763
- 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/4520-01-257-9763/
JSON: https://nsnexplorer.com/api/nsn/4520-01-257-9763.json