The Parts Kit,thermisto, cataloged under National Stock Number 4210-01-441-9373, is classified within Federal Supply Class 4210 (Firefighting Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Parts Kit,thermisto |
| FSC / FSG | 4210 — Firefighting Equipment (FSG 42) |
| Manufacturers | Kidde-Fenwal, Llc (CAGE 0KDP7); Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (CAGE 73168) |
| Parameter | Value |
|---|---|
| NSN | 4210-01-441-9373 |
| Primary Part Number | 424225 |
| Item Name | Parts Kit,thermisto |
| FSC / FSG | 4210 / 42 — Firefighting Equipment |
| Manufacturer | Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 424225 | Kidde-Fenwal, Llc (USA) |
| 424225 PRIMARY | Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA) |
| Reference | Meaning |
|---|---|
| 424225 | D/9 Drawing number reference only Kidde Technologies, Inc Div Kidde Aerospace and Defense |
| 424225A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4210-01-441-9373 is a Parts Kit,thermisto, manufactured by Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems, classified under FSC 4210, Firefighting Equipment. Status: active.
NSN 4210-01-441-9373 has 2 manufacturer part numbers on file: 424225 (Kidde-Fenwal, Llc), 424225 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems).
1 possible match (shared part number, not a government interchangeability claim): 6640-01-606-2986. 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.