Weller TST8 Narrow Screwdriver Soldering Iron Tip St Series

Product Description

The WELLER TST8 is a narrow screwdriver-style replacement soldering iron tip designed for precision soldering work. Part of the ST series tip lineup, the TST8 features a tip diameter of 0.0625 inches (1/16 inch) and a tip length of 0.75 inches (3/4 inch). Its narrow screwdriver profile concentrates heat transfer to a small contact area, making it well suited for soldering in tight spaces, fine-pitch connections, and detailed electronic or electrical work. Electricians, HVAC technicians, and electronics technicians working with low-voltage wiring, control boards, and sensor leads are the primary installers of this tip type.

The TST8 tip is used in light-duty soldering applications including control wiring, thermostat connections, relay terminals, and PCB repair in residential and commercial service environments. The narrow screwdriver geometry provides consistent flat-face contact on small solder joints without bridging adjacent pads or terminals. This tip is compatible with ST series Weller soldering irons as indicated by its series designation.

Key Features

• Narrow screwdriver tip profile for precision heat application on small solder joints
• Tip diameter of 0.0625 inches for fine-pitch and confined-space soldering
• Tip length of 0.75 inches for controlled access in tight work areas
• ST series designation for direct fitment with compatible Weller soldering irons
• Lightweight at 0.03 pounds for minimal added weight during use

Compatibility

Designed for use with ST series Weller soldering irons as specified by the manufacturer.

Installation Notes

Tip replacement should be performed with the soldering iron fully powered off and cooled to ambient temperature before handling. Allow the iron to reach full operating temperature after tip installation before beginning work. Follow applicable electrical safety practices when soldering live-circuit repairs are not permitted under NEC guidelines. Use appropriate ventilation when soldering to avoid flux fume exposure.