CD PIN MILD STEEL .105 X 1.25 -1000/PKT

Heavy-Duty Capacitor Discharge (CD) Weld Pins for Insulation Fastening

Product Overview

This CD Pin is a mild steel capacitor discharge weld pin measuring .105" (2.7mm) diameter x 1.25" (32mm) length, packaged 1000 pieces per carton. Designed for use with CD (Capacitor Discharge) stud welding systems, these pins are the industry standard for quickly and permanently fastening insulation, jacketing, and lagging material to sheet metal ductwork, tanks, vessels, and piping without damaging the base metal surface.

Key Features

• Material: Cold-rolled mild steel for excellent weldability and strong bond strength
• Diameter: .105" — sized to match standard CD stud welding gun collets
• Length: 1.25" — ideal for standard-thickness duct liner, board insulation, and blanket insulation
• Pack Size: 1000 pins per package (pkt) — bulk quantity for commercial and industrial jobs
• Pointed tip design for fast, clean capacitor discharge welding with minimal splatter
• Compatible with most CD stud welders, including handheld and bench-mounted units

Applications

• Fastening fiberglass duct liner and duct board insulation
• Securing mineral wool, foam, and blanket insulation to metal ductwork
• HVAC and sheet metal fabrication
• Mechanical insulation contracting
• Tank, vessel, and pipe insulation anchoring
• Used with insulation hold-fast washers/clips (speed clips) to lock insulation in place

Why Choose CD Weld Pins?

CD (Capacitor Discharge) pins provide a fast, no-burn-through alternative to drawn-arc studs — ideal for thin-gauge sheet metal. The weld is instantaneous, requires no flux, and leaves minimal marking on the reverse side of the metal, making it the preferred fastening method for HVAC insulation installers, mechanical contractors, and metal fabricators.

Specifications Summary