The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-061-2989, 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 Bishop Freeman Co. Government technical data includes 1 specification, 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 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 | 4520-01-061-2989 |
| Primary Part Number | 55-12-1A |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Bishop Freeman Co |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 115.0 AC SINGLE VOLTAGE |
| 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 |
|---|---|
| 55-12-1A PRIMARY | Bishop Freeman Co (USA) |
NSN 4520-01-061-2989 is a Heating Element,electrical,nonim, manufactured by Bishop Freeman Co, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-061-2989 has 1 manufacturer part number on file: 55-12-1A (Bishop Freeman Co).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-427-5357. Verify interchangeability with system specifications before substitution.
Key specifications for 55-12-1A: Voltage in Volts and Current Type: 115.0 AC SINGLE VOLTAGE. 1 specification is 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.