The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-437-9478, 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 Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil. Government technical data includes 10 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-437-9478 |
| Primary Part Number | PL9A001-01-C FIND NO. 25 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| Status | ACTIVE |
| Phase | THREE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Length | 3.125 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 440.0 AC SINGLE VOLTAGE |
| Terminal Length | 4.000 INCHES NOMINAL IN |
| Element Connection Style | WIRE LEAD |
| Heat Quantity | 1 |
| Element Radiation Spectrum | NONINFRARED |
| Element Quantity | 1 |
| 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 |
|---|---|
| C3/1100/11-5 | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| 90C01-8662 | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| PL9A001-01-C FIND NO. 25 PRIMARY | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| Reference | Meaning |
|---|---|
| C3/1100/11-5 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4520-01-437-9478 is a Heating Element,electrical,immer, manufactured by Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-437-9478 has 3 manufacturer part numbers on file: C3/1100/11-5 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil), 90C01-8662 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil), PL9A001-01-C FIND NO. 25 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
Key specifications for PL9A001-01-C FIND NO. 25: Phase: THREE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 2; Length: 3.125 INCHES NOMINAL IN. 10 specifications are 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.