The Thermocouple,heating Element, cataloged under National Stock Number 6685-01-545-6309, 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 Drs Environmental Systems Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Thermocouple,heating Element |
| FSC / FSG | 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments (FSG 66) |
| Manufacturers | Drs Environmental Systems Inc (CAGE 5RQL2); Jl Products, Llc (CAGE 8KDV2) |
| Parameter | Value |
|---|---|
| NSN | 6685-01-545-6309 |
| Primary Part Number | EAS81420-1 |
| Item Name | Thermocouple,heating Element |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Drs Environmental Systems Inc |
| 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 |
|---|---|
| EAS81420-1 | Drs Environmental Systems Inc (USA) |
| EAS81420-1 | Jl Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| EAS81420-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| EAS81420-1 | 5/2 Secondary reference U.S. Government activity |
| 21543-3-40-60 | 3/2 Design control — primary reference U.S. Government activity |
| EAS81420-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 6685-01-545-6309 is a Thermocouple,heating Element, manufactured by Drs Environmental Systems Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-545-6309 has 2 manufacturer part numbers on file: EAS81420-1 (Drs Environmental Systems Inc), EAS81420-1 (Jl Products, Llc).
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.