The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-998-8752, 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 Technical Heaters, Inc. Dba Technical Heaters Inc. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-998-8752 |
| Primary Part Number | LIW258 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Technical Heaters, Inc. Dba Technical Heaters Inc |
| Status | ACTIVE |
| FSC Application Data | GYROSCOPE,RATE |
| Body Style | STRIP ELEMENT |
| Width | 0.810 INCHES NOMINAL IN |
| 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 |
|---|---|
| LIW258 | Technical Heaters, Inc. Dba Technical Heaters Inc (USA) |
| Reference | Meaning |
|---|---|
| 61-1613 | 3/9 Design control — primary reference Elmwood Sensors Inc Transflex Products Div |
| 972078-1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 60912 | 5/9 Secondary reference Thermal Management |
NSN 4520-00-998-8752 is a Heating Element,electrical,nonim, manufactured by Technical Heaters, Inc. Dba Technical Heaters Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-998-8752 has 1 manufacturer part number on file: LIW258 (Technical Heaters, Inc. Dba Technical Heaters Inc).
1 possible match (shared part number, not a government interchangeability claim): 8465-01-574-6995. Verify interchangeability with system specifications before substitution.
Key specifications for LIW258: FSC Application Data: GYROSCOPE,RATE; Body Style: STRIP ELEMENT; Overall Length: 6.340 INCHES NOMINAL IN; Width: 0.810 INCHES NOMINAL IN. 3 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.