# NSN 4520-00-498-4174: Unit Heater, Air Circulating, Stea

NSN 4520-00-498-4174 (also written 4520004984174; NIIN 00-498-4174) is an unit heater, air circulating, stea in Federal Supply Class 4520, Space and Water Heating Equipment. 5 manufacturer part numbers from 3 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4520-00-498-4174 (4520004984174)
- NIIN: 00-498-4174 (004984174)
- Item name: UNIT HEATER,AIR CIRCULATING,STEA
- 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 G: the government has a complete data package and the rights to use it. (observed 2026-11-01)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABGL | WIDTH | INCHES NOMINAL 25.000 |
| ABAZ | HEAT DIRECTING DEVICE | ADJUSTABLE LOUVER |
| AEJZ | DEPTH | INCHES NOMINAL 28.000 |
| AKDJ | PRIME MOVER TYPE | ELECTRIC MOTOR |
| ABBD | MAXIMUM AIR FLOW RATE | CUBIC FEET PER MINUTE 790.0 |
| AMPS | CURRENT RATING IN AMPS | 0.81 |
| BDXJ | HEATING ELEMENT TYPE | HOT WATER COIL |
| ACDC | CURRENT TYPE | AC |
| CQXD | HEAT DELIVERY RATE | BRITISH THERMAL UNIT 46000.0 |
| ELEC | VOLTAGE IN VOLTS | 115.0 |
| FAAZ | PHASE | SINGLE |
| FREQ | FREQUENCY IN HERTZ | 60.0 |
| HGTH | HEIGHT | INCHES NOMINAL 21.750 |
| NMBR | QUANTITY | 1 |
| SFTT | SURFACE TREATMENT | ZINC |
| ZZZK | SPECIFICATION/STANDARD DATA | GOVERNMENT SPECIFICATION 81349--IL-U-17293D TO SH TO |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | TYPE 1 AND SIZE 13 |
| ABAX | HEAT DELIVERY DIRECTION | HORIZONTAL |
| ABAY | HEAT DISCHARGE OUTLET TYPE | ADJUSTABLE |
| AAXX | MOUNTING TYPE | CEILING SUSPENDED |
| ABBA | AIR CIRCULATION DEVICE | PROPELLER FAN |
| ABBB | SPEED ADJUSTMENTS | SINGLE SPEED |
| CQSJ | INCLOSURE MATERIAL | STEEL |
| ABAM | HEAT MEDIUM TYPE | HOT WATER OR STEAM |
| ABAN | MAXIMUM PRESSURE LIMIT | POUNDS PER SQUARE INCH GAGE 25.0 |
| ABAW | HEAT OUTLET QUANTITY | 1 |
| ALYC | OPERATING CONTROL TYPE | HAND SWITCH |
| ABBE | CIRCULATED AIR TYPE | HEATED |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 68H636SZ13-110VAC60HZ-1PH | 38450 | ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 82D35 SIZE 13 | 87103 | EDGE ELECTRONICS CORPORATION DBA MC INTYRE COIL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 88H0033SZ13-110VAC60HZ1PH | 38450 | ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-U-17293 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MILU17293B | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE8E8-27-T-0304 | 6 | 2026-11-09 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520004984174&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520004984174&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520004984174
- 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/4520-00-498-4174/
JSON: https://nsnexplorer.com/api/nsn/4520-00-498-4174.json