# NSN 4520-00-185-7021: Heating Element, Electrical, Nonim

NSN 4520-00-185-7021 (also written 4520001857021; NIIN 00-185-7021) is a heating element, electrical, nonim in Federal Supply Class 4520, Space and Water Heating Equipment. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4520-00-185-7021 (4520001857021)
- NIIN: 00-185-7021 (001857021)
- Item name: HEATING ELEMENT,ELECTRICAL,NONIM
- 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 H: the government lacks sufficient, accurate or legible data to buy from other sources. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| FEAT | SPECIAL FEATURES | SURFACE TREATMENT NICKEL,ASTM B-141,TYPE FC |
| MATT | MATERIAL | RESISTANCE WIRE NICKEL ALLOY D AND NICKEL ALLOY E |
| BHHK | ELEMENT QUANTITY | 1 |
| CQJX | NOMINAL THREAD SIZE | STUD INCHES 0.138 |
| CQRN | THREAD QUANTITY | STUD PER INCH 32.0 |
| MATT | MATERIAL | RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION MAGNESIUM OXIDE |
| ABRY | LENGTH | INCHES NOMINAL 15.750 |
| AZQH | MAXIMUM WATTAGE RATING IN WATTS | 1800.0 |
| MATT | MATERIAL | SHEATH STEEL CORROSION RESISTING |
| THSD | THREAD SERIES DESIGNATOR | STUD UNIFIED NATIONAL COARSE (UNC) |
| ABNS | WATT DENSITY RATING | SINGLE VOLTAGE PER SQUARE INCH 37.0 |
| ABJT | TERMINAL LENGTH | INCHES NOMINAL 2.000 |
| ABNR | HEAT QUANTITY | 1 |
| ABJS | ELEMENT CONNECTION STYLE | — |
| ABJA | ELEMENT RADIATION SPECTRUM | NONINFRARED |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 16.750 |
| CSBH | VOLTAGE IN VOLTS AND CURRENT TYPE | SINGLE VOLTAGE DC 440.0 |
| AAQL | BODY STYLE | — |
| AARA | TERMINAL QUANTITY | 2 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 118-113686-020 | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 118-113686-020 | 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=4520001857021&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520001857021
- 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/4520-00-185-7021/
JSON: https://nsnexplorer.com/api/nsn/4520-00-185-7021.json