The Biocide,fuel Preservative, cataloged under National Stock Number 6840-01-173-6940, is classified within Federal Supply Class 6840 (Pest Control Agents and Disinfectants) of the Chemicals and Chemical Products group. The manufacturer of record is Fqs Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6840-01-173-6940 |
| Primary Part Number | FQS-7010-05 |
| Item Name | Biocide,fuel Preservative |
| FSC / FSG | 6840 / 68 — Pest Control Agents and Disinfectants |
| Manufacturer | Fqs Llc |
| Status | ACTIVE |
| General Characteristics Item Description | FUEL ADDITIVE THAT COMBATS FUNGUS AND OTHER MICROBIAL LIFE IN HYDROCARBON FUELS; LIQUID FORM; 5 GALLON DRUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| FQS-7010-05 PRIMARY | Fqs Llc (USA) |
| Reference | Meaning |
|---|---|
| MIL-S-53021 | 4/1 Identification reference U.S. Government activity |
| KATHON FP 1.5/5 GL DR | 5/9 Secondary reference Fqs Llc |
| MICROGARD 4000 | 5/9 Secondary reference Fqs Llc |
| FQS 1.5 MICROBICIDE/5 GL | 5/9 Secondary reference Fqs Llc |
| FQS 1.5 MICROBICIDE | 3/1 Design control — primary reference Fqs Llc |
NSN 6840-01-173-6940 is a Biocide,fuel Preservative, manufactured by Fqs Llc, classified under FSC 6840, Pest Control Agents and Disinfectants. Status: active.
NSN 6840-01-173-6940 has 1 manufacturer part number on file: FQS-7010-05 (Fqs Llc).
3 possible matches (shared part number, not a government interchangeability claim): 6850-01-246-6544, 6840-01-358-7218, 6840-01-696-4661. Verify interchangeability with system specifications before substitution.
Key specifications for FQS-7010-05: General Characteristics Item Description: FUEL ADDITIVE THAT COMBATS FUNGUS AND OTHER MICROBIAL LIFE IN HYDROCARBON FUELS; LIQUID FORM; 5 GALLON DRUM. 1 specification is documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.