The Heater,fluid,electric, cataloged under National Stock Number 4520-01-571-9991, 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 Royston Limited. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-571-9991 |
| Primary Part Number | TM6510-001 |
| Item Name | Heater,fluid,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Royston Limited |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 120.0 AC/DC |
| Wattage Rating | 150.000 WATTS |
| 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 |
|---|---|
| TM6510-001 | Royston Limited (GBR) |
| TM6510-001 | Cummins Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 0W615106-000 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4520-01-571-9991 is a Heater,fluid,electric, manufactured by Royston Limited, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-571-9991 has 2 manufacturer part numbers on file: TM6510-001 (Royston Limited), TM6510-001 (Cummins Ltd).
Key specifications for TM6510-001: Voltage in Volts and Current Type: 120.0 AC/DC; Overall Length: 5.250 INCHES NOMINAL IN; Wattage Rating: 150.000 WATTS. 2 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.