The Sensor,ambient Temperature, cataloged under National Stock Number 6685-01-643-3921, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Sensor,ambient Temperature |
| FSC / FSG | 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments (FSG 66) |
| Manufacturers | Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division (CAGE 64818) |
| Parameter | Value |
|---|---|
| NSN | 6685-01-643-3921 |
| Primary Part Number | 020941-02 |
| Item Name | Sensor,ambient Temperature |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 020941-02 PRIMARY | Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division (USA) |
| Reference | Meaning |
|---|---|
| 020940 | D/9 Drawing number reference only Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division |
| 2ATV00124-0003 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 6685-01-643-3921 is a Sensor,ambient Temperature, manufactured by Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-643-3921 has 1 manufacturer part number on file: 020941-02 (Fluid Components International Llc Dba Fluid Components International Llc Div Aerospace Division).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-651-7966. 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.
NSN 6685-01-643-3921 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.