The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-104-0111, 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 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-104-0111 |
| Primary Part Number | 393-561322-505 |
| 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 |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 4 |
| Length | 12.125 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 240.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, DOUBLE TERMINALS |
| Maximum Wattage Rating in Watts | 2500.0 SINGLE VOLTAGE |
| Terminal Length | 0.812 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Effective Heating Length | 12.125 INCHES NOMINAL IN |
| Mounting Method Style | TERMINAL MOUNTED |
| Nominal Thread Size | 8.000 INCHES SCREW IN |
| Heat Quantity | 3 |
| Element Radiation Spectrum | NONINFRARED |
| Material | STEEL CORROSION RESISTING SHEATH |
| Thread Series Designator | NPT SCREW |
| Thread Quantity | 32.0 PER INCH SCREW |
| 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 |
|---|---|
| 1185AS102 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 393-561322-505 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| TRSS-57XX | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| TRSS5845 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| TA11040111 | 5/9 Secondary reference Tamco, Inc. Dba Technical Assistance Company Div Technical Assistance Company |
| TA11040111 | 5/9 Secondary reference Intelliworks Ht |
NSN 4520-01-104-0111 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 4520-01-104-0111 has 3 manufacturer part numbers on file: 1185AS102 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 393-561322-505 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), TRSS-57XX (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for 393-561322-505: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 4; Length: 12.125 INCHES NOMINAL IN. 18 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.