# NSN 6840-01-173-6940: Biocide, Fuel Preservative

NSN 6840-01-173-6940 (also written 6840011736940; NIIN 01-173-6940) is a biocide, fuel preservative in Federal Supply Class 6840, Pest Control Agents and Disinfectants. 6 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 6840-01-173-6940 (6840011736940)
- NIIN: 01-173-6940 (011736940)
- Item name: BIOCIDE,FUEL PRESERVATIVE
- Federal Supply Class: [FSC 6840 Pest Control Agents and Disinfectants](https://nsnexplorer.com/fsc/6840/)
- Federal Supply Group: [FSG 68](https://nsnexplorer.com/group/68/)
- Acquisition method suffix code: AMSC T: handled under qualified products list procedures. (observed 2026-11-04)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | FUEL ADDITIVE THAT COMBATS FUNGUS AND OTHER MICROBIAL LIFE IN HYDROCARBON FUELS; LIQUID FORM; 5 GALLON DRUM |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| FQS 1.5 MICROBICIDE | 40161 | FQS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| FQS 1.5 MICROBICIDE/5 GL | 40161 | FQS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| FQS-7010-05 | 40161 | FQS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| KATHON FP 1.5/5 GL DR | 40161 | FQS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MICROGARD 4000 | 40161 | FQS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-S-53021 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-14 | [SPE4AX16D9008/SPE4A626FZK2P](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6840011736940) | BIOCIDE, FUEL PRESERVATIVE | ASRC FEDERAL FACILITIES LOGISTICS, LLC | $1,108.64 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=6840011736940&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6840011736940
- 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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