# NSN 4520-01-512-9450: Feed Heater Assy

NSN 4520-01-512-9450 (also written 4520015129450; NIIN 01-512-9450) is a feed heater assy in Federal Supply Class 4520, Space and Water Heating Equipment. 3 manufacturer part numbers from 2 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4520-01-512-9450 (4520015129450)
- NIIN: 01-512-9450 (015129450)
- Item name: FEED HEATER ASSY
- 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 |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | VIRGINIA CLASS SSN |
| FEAT | SPECIAL FEATURES | INTERCHANGABLE WITH 4520-01-512-9031, EXCESS HEATER ASSY |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | WELDED HEATER WELL; INCLUDES 2 TEMPERATURE SENSORS (5905-01-512-5896 & 5905-01-512-5899) AND ONE HEATER ELEMENT (4540-01-287-0786) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| S9515-AL-MMA-010, 7-43 ITEM 10 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S9515-AL-MMA-010, 7-45, ITEM 1 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SV78999-1 | 73030 | HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE8E8-27-T-0152 | 18 | 2026-10-26 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520015129450&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520015129450&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520015129450
- 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/4520-01-512-9450/
JSON: https://nsnexplorer.com/api/nsn/4520-01-512-9450.json