The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-174-4591, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-174-4591 |
| Primary Part Number | SEF10-230V250W |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Length | 6.125 INCHES MINIMUM AND 6.375 INCHES MAXIMUM IN |
| Voltage in Volts and Current Type | 230.0 AC SINGLE VOLTAGE |
| Body Style | STRIP, FINNED |
| Hole or Slot Quantity | 2 |
| Maximum Wattage Rating in Watts | 250.0 SINGLE VOLTAGE |
| Terminal Length | 0.500 INCHES NOMINAL IN |
| Mounting Facility Length | 0.500 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Mounting Method Style | SLOT OR HOLE TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.216 INCHES STUD IN |
| Heat Quantity | 1 |
| Terminal Arrangement Style | PARALLEL AT ONE END EXCEPT ON 3/4 AND 1 INCH WIDTH IN |
| Watt Density Rating | 10.0 PER SQUARE INCH SINGLE VOLTAGE |
| Width | 2.000 INCHES NOMINAL IN |
| Material | IRON SHEATH |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD |
| Mounting Facility Width | 0.312 INCHES NOMINAL IN |
| Thread Quantity | 24.0 PER INCH STUD |
| 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 |
|---|---|
| 323635PC6 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| SEF10-230V250W PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
NSN 4520-00-174-4591 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-174-4591 has 2 manufacturer part numbers on file: 323635PC6 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), SEF10-230V250W (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for SEF10-230V250W: Frequency in Hertz: 60.0; Terminal Quantity: 2; Length: 6.125 INCHES MINIMUM AND 6.375 INCHES MAXIMUM IN; Voltage in Volts and Current Type: 230.0 AC SINGLE VOLTAGE. 21 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.