The Heater,thermal Release, cataloged under National Stock Number 5999-01-453-5684, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Energy and Automation Inc Siemens Furnas Controls Div. 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. Unit of issue: EA.
| Item Name | Heater,thermal Release |
| FSC / FSG | 5999 — Miscellaneous Electrical and Electronic Components (FSG 59) |
| Manufacturers | Siemens Energy and Automation Inc Siemens Furnas Controls Div (CAGE 23826) |
| Parameter | Value |
|---|---|
| NSN | 5999-01-453-5684 |
| Primary Part Number | K33 |
| Item Name | Heater,thermal Release |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Siemens Energy and Automation Inc Siemens Furnas Controls Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Unit of Issue | EA |
| Acquisition advice code | X |
| Weight | 0.0500 lbs |
| Cube | 0.0391 cu ft |
| Part Number | Manufacturer |
|---|---|
| K33 PRIMARY | Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA) |
NSN 5999-01-453-5684 is a Heater,thermal Release, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-453-5684 has 1 manufacturer part number on file: K33 (Siemens Energy and Automation Inc Siemens Furnas Controls Div).
1 possible match (shared part number, not a government interchangeability claim): 4030-01-692-0926. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). 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.