# NSN 6685-01-518-0319: Thermocouple, Immersion

NSN 6685-01-518-0319 (also written 6685015180319; NIIN 01-518-0319) is a thermocouple, immersion in Federal Supply Class 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. 7 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 6685-01-518-0319 (6685015180319)
- NIIN: 01-518-0319 (015180319)
- Item name: THERMOCOUPLE,IMMERSION
- Federal Supply Class: [FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments](https://nsnexplorer.com/fsc/6685/)
- Federal Supply Group: [FSG 66](https://nsnexplorer.com/group/66/)
- Acquisition method suffix code: AMSC B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABHP | OVERALL LENGTH | INCHES MINIMUM 7.687 AND INCHES MAXIMUM 7.891 |
| AFFL | MOUNTING BOLT CIRCLE DIAMETER | INCHES MINIMUM 2.140 AND INCHES MAXIMUM 2.160 |
| AFGA | OPERATING TEMP RANGE | FAHRENHEIT 1000.0 TO 1975.0 |
| AGAV | END ITEM IDENTIFICATION | F-100 ENGINES |
| AXHR | MOUNTING FACILITY TYPE AND QUANTITY | FLANGE 1 |
| BKBW | IMMERSION LENGTH | INCHES MINIMUM 2.557 AND INCHES MAXIMUM 2.567 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | THERMOCOUPLE FTIT |
| FEAT | SPECIAL FEATURES | SPRING LOADED THERMOCOUPLE; ALUMINIDE COATED; HAS TWO TYPE K THERMOCOUPLES; MOUNTING HOLES IN FLANGE ARE 0.220 IN DIA |
| FTLD | FUNCTIONAL DESCRIPTION | THERMOCOUPLE IS A DUAL ELEMENT IMMERSION THERMOCOUPLE DESIGNED FOR USE IN THE PRATT & WHITNEY F 100 ENGINES, LOCATION IS THE FRONT TURBINE INLET |
| MATT | MATERIAL | THERMOCOUPLE WIRE NICKEL ALLOY |
| RDAL | REFERENCE DATA AND LITERATURE | PRATT & WHITNEY DRAWING 4087911 AND ROSEMOUNT DRAWING 6837 |
| TTQY | TERMINAL TYPE AND QUANTITY | TERMINAL BLOCK W/SCREWS 4 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4087911 | 77445 | RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6685PL0751291 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6685PL1621310 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6837 | 59885 | ROSEMOUNT AEROSPACE INC DBA ROSEMOUNT AEROSPACE INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6837 | 60678 | ROSEMOUNT AEROSPACE INC. DBA ROSEMOUNT AEROSPACE DIVISION DIV UTAS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6837A | 59885 | ROSEMOUNT AEROSPACE INC DBA ROSEMOUNT AEROSPACE INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6837A | 60678 | ROSEMOUNT AEROSPACE INC. DBA ROSEMOUNT AEROSPACE DIVISION DIV UTAS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-22 | [SPE4AX18D9413/SPE4A626F495Z](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6685015180319) | THERMOCOUPLE, IMMERSION | ROSEMOUNT AEROSPACE INC DBA ROSEMOUNT AEROSPACE INC | $319,517.55 |
| 2026-09-21 | [SPE4AX18D9413/SPE4A626F457K](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6685015180319) | THERMOCOUPLE, IMMERSION | ROSEMOUNT AEROSPACE INC DBA ROSEMOUNT AEROSPACE INC | $382,547.21 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=6685015180319&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6685015180319
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

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