Kester 24-6337-6422 Solder Wire 0.015 Inch Flux Core 63/37 SnPb Water Soluble 331

Kester 24-6337-6422 is a 1 lb spool of.015 inch (0.4 mm) flux-core solder designed for electronics work. The Sn-Pb alloy is 63% tin and 37% lead, a classic eutectic formulation that delivers reliable melting behavior and good wetting. This wire uses a Water Soluble 331 flux core, enabling flux residues to be cleaned with water after soldering. It is suitable for general electronics assembly and repair, including PCB soldering and component lead connections, with a 0.015" diameter that supports small-gauge work. The product is identified by the Kester 24-6337-6422 part number on a 1 lb reel, ensuring consistent formulation and supply for ongoing projects.