The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-437-9501, 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 Watlow Electric Manufacturing Co Dba Watlow. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-437-9501 |
| Primary Part Number | STB8A1-J29-TB |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Watlow Electric Manufacturing Co Dba Watlow |
| Status | ACTIVE |
| Phase | THREE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Voltage in Volts and Current Type | 440.0 AC SINGLE VOLTAGE |
| Body Style | BAND TYPE/NOZZLE ELEMENT |
| Maximum Wattage Rating in Watts | 200.0 SINGLE VOLTAGE |
| Heat Quantity | 1 |
| Inside Diameter | 8.000 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Width | 1.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| STB8A1-J29-TB | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| STB8A1-J29-TB PRIMARY | Watlow Electric Manufacturing Co Dba Watlow (USA) |
| Reference | Meaning |
|---|---|
| PL9A001-01-C FIND NO. 26 | 5/9 Secondary reference Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
NSN 4520-01-437-9501 is a Heating Element,electrical,nonim, manufactured by Watlow Electric Manufacturing Co Dba Watlow, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-437-9501 has 2 manufacturer part numbers on file: STB8A1-J29-TB (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil), STB8A1-J29-TB (Watlow Electric Manufacturing Co Dba Watlow).
Key specifications for STB8A1-J29-TB: Phase: THREE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Voltage in Volts and Current Type: 440.0 AC SINGLE VOLTAGE; Body Style: BAND TYPE/NOZZLE ELEMENT. 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.