The Feed Heater Assy, cataloged under National Stock Number 4520-01-512-9450, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-512-9450 |
| Primary Part Number | S9515-AL-MMA-010, 7-43 ITEM 10 |
| Item Name | Feed Heater Assy |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SV78999-1 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| S9515-AL-MMA-010, 7-45, ITEM 1 | Naval Sea Systems Command (USA) |
| S9515-AL-MMA-010, 7-43 ITEM 10 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4520-01-512-9450 is a Feed Heater Assy, manufactured by Naval Sea Systems Command, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-512-9450 has 3 manufacturer part numbers on file: SV78999-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace), S9515-AL-MMA-010, 7-45, ITEM 1 (Naval Sea Systems Command), S9515-AL-MMA-010, 7-43 ITEM 10 (Naval Sea Systems Command).
Key specifications for S9515-AL-MMA-010, 7-43 ITEM 10: 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); Special Features: INTERCHANGABLE WITH 4520-01-512-9031, EXCESS HEATER ASSY; End Item Identification: VIRGINIA CLASS SSN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.