The Heater,space,electric, cataloged under National Stock Number 4520-01-659-4391, 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 L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heater,space,electric |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems (CAGE 39SX2); Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (CAGE 65586) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-659-4391 |
| Primary Part Number | 864-10321-16 |
| Item Name | Heater,space,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems |
| Status | ACTIVE |
| 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 |
|---|---|
| 420-02-12-001GA ITEM 12 | L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems (USA) |
| 864-10321-16 PRIMARY | L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems (USA) |
| 0T-1202 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 420-02-12-001GA | D/9 Drawing number reference only L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems |
NSN 4520-01-659-4391 is a Heater,space,electric, manufactured by L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-659-4391 has 3 manufacturer part numbers on file: 420-02-12-001GA ITEM 12 (L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems), 864-10321-16 (L3 Technologies, Inc. Dba Harris Corp Div L3 Maritime Systems), 0T-1202 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
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.