The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-281-1453, 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 Wellman Thermal Systems Corp. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-281-1453 |
| Primary Part Number | SS-1252 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Wellman Thermal Systems Corp |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Length | 16.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 240.0 AC SINGLE VOLTAGE |
| Body Style | STRIP ELEMENT |
| Hole or Slot Quantity | 2 |
| Maximum Wattage Rating in Watts | 375.0 SINGLE VOLTAGE |
| Terminal Length | 0.750 INCHES NOMINAL IN |
| Mounting Facility Length | 0.281 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Effective Heating Length | 13.750 INCHES NOMINAL IN |
| Mounting Method Style | SLOT OR HOLE TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.190 INCHES STUD IN |
| Heat Quantity | 1 |
| Terminal Arrangement Style | OFFSET OR STAGGERED AT ONE END |
| Element Radiation Spectrum | NONINFRARED |
| Width | 1.500 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 16.875 INCHES NOMINAL IN |
| Material | STEEL SHEATH |
| Thread Series Designator | UNF STUD |
| Mounting Facility Width | 0.625 INCHES NOMINAL IN |
| Thread Quantity | 32.0 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 |
|---|---|
| SS-1252 PRIMARY | Wellman Thermal Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 58A115838-P1 | 5/9 Secondary reference Ametek Advanced Industries, Inc. |
NSN 4520-01-281-1453 is a Heating Element,electrical,nonim, manufactured by Wellman Thermal Systems Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-281-1453 has 1 manufacturer part number on file: SS-1252 (Wellman Thermal Systems Corp).
Key specifications for SS-1252: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 2; Length: 16.000 INCHES NOMINAL IN. 24 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.