The Thermocouple,contact, cataloged under National Stock Number 6685-01-618-6690, 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 Bird-Johnson Propeller Company, Llc. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-618-6690 |
| Primary Part Number | 684-17-29 |
| Item Name | Thermocouple,contact |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| 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 |
|---|---|
| A1-47-10 FIGURE 01 ITEM 205 | Bird-Johnson Propeller Company, Llc (USA) |
| 684-17-29 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| 684-17-29 | Rolls-Royce Plc Naval Marine (GBR) |
| 40071173 | Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt) (GBR) |
| Reference | Meaning |
|---|---|
| 684-17-29 | 5/9 Secondary reference Esterline Sensors Services Americas Inc Div Esterline Sensors Servces Americas Inc. |
NSN 6685-01-618-6690 is a Thermocouple,contact, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-618-6690 has 4 manufacturer part numbers on file: A1-47-10 FIGURE 01 ITEM 205 (Bird-Johnson Propeller Company, Llc), 684-17-29 (Bird-Johnson Propeller Company, Llc), 684-17-29 (Rolls-Royce Plc Naval Marine), 40071173 (Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt)).
Key specifications for 684-17-29: Part Name Assigned by Controlling Agency: THERMOCOUPLE ASSEMBLY; End Item Identification: ROLLS-ROYCE MT30 TURBINE ENGINE. 0 specifications are documented in the U.S. Government catalog.
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.