The Flux,soldering, cataloged under National Stock Number 3439-01-459-2000, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Kester Inc. Government technical data includes 4 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-459-2000 |
| Primary Part Number | 186 |
| Item Name | Flux,soldering |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Kester Inc |
| Status | ACTIVE |
| Material for Which Formulated | COPPER AND TIN |
| Content Within Each Unit Package | 1 GAL |
| Physical Form | LIQUID |
| Environmental Protection | CORROSION RESISTANT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 186 PRIMARY | Kester Inc (USA) |
NSN 3439-01-459-2000 is a Flux,soldering, manufactured by Kester Inc, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-459-2000 has 1 manufacturer part number on file: 186 (Kester Inc).
Key specifications for 186: Material for Which Formulated: COPPER AND TIN; Content Within Each Unit Package: 1 GAL; Physical Form: LIQUID; Special Features: 186 ROSIN FLUX;FLUX IS MOISTURE AND FUNGUS RESISTANT;DESIGNED FOR WAVE/DRAG SOLDERING OF SINGLE SIDED/DOUBLE SIDED/MULTI-LAYER CIRCUIT BOARD ASSEMBLIES;USED FOR SOLDERING MULTI-LAYER ASSEMBLIES WHICH REQUIRE A HIGH PREHEAT TEMPERATURE;USED IN FOAM FLUXING EQUIPMENT;SPECIFIC GRAVITY AT 75 DEG. F;FLASH POINT 65 DEG. F;SOLDER SPREAD FACTOR 95 MM MM. 4 specifications are 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.