The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-503-5981, 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 Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-503-5981 |
| Primary Part Number | 7510-G01 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Voltage in Volts and Current Type | 115.0 AC THIRD VOLTAGE |
| Maximum Wattage Rating in Watts | 500.0 SINGLE VOLTAGE |
| Thermostat Range | +55.0 TO 125.0 FAHRENHEIT DEGF |
| Material | STEEL CORROSION RESISTING SHEATH |
| 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 |
|---|---|
| 7510-G01 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 7053 ITEM 4 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 13J6637 | 5/9 Secondary reference Hotwatt, Inc |
| 7510-01 | 5/9 Secondary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
| 7510B-01 | 5/9 Secondary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
| 4520PL0907081 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4520-01-503-5981 is a Heating Element,electrical,nonim, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-503-5981 has 2 manufacturer part numbers on file: 7510-G01 (Howell Laboratories Inc Dba Howell Laboratories Inc), 7053 ITEM 4 (Howell Laboratories Inc Dba Howell Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 3220-01-660-3021. Verify interchangeability with system specifications before substitution.
Key specifications for 7510-G01: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Voltage in Volts and Current Type: 115.0 AC THIRD VOLTAGE; Maximum Wattage Rating in Watts: 500.0 SINGLE VOLTAGE. 6 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.