CD INSULATION PIN .105 X 6" - 1000/PK

Capacitor Discharge Weld Pins for Fastening Rigid & Semi-Rigid Insulation

Product Overview

These .105" x 6" CD (Capacitor Discharge) insulation pins are precision-engineered weld pins designed for fast, secure attachment of insulation to sheet metal ducts, panels, and other metal substrates. Sold in convenient 1000-count packs, these pins are a staple for HVAC contractors, insulation installers, and metal fabrication professionals who need a reliable, high-volume fastening solution.

Key Features

• Diameter: .105" (12 gauge) — the industry-standard gauge for CD stud welding applications
• Length: 6" — ideal for standard-thickness insulation boards, duct liner, and wrap insulation
• Welding Method: Capacitor Discharge (CD) stud welding — no drilling, no adhesives, no mechanical fasteners required
• Pack Size: 1000 pieces per box — bulk quantity for large-scale commercial and industrial jobs
• Material: Mild steel construction for strong weld penetration and long-term holding power

How CD Insulation Pins Work

CD insulation pins are welded directly to a clean metal surface using a capacitor discharge stud welder. The weld gun delivers a short, high-intensity electrical discharge that fuses the pin's tip to the base metal in a fraction of a second — creating an instant, permanent bond without heat distortion, burn-through, or the need for pre-drilled holes. Once welded, the pin is pushed through the insulation material and secured with a speed clip or self-locking washer.

Common Applications

• HVAC duct insulation and liner installation
• Sheet metal fabrication shops
• Commercial and industrial insulation contracting
• Marine and shipbuilding insulation systems
• Boiler, tank, and pipe insulation projects
• Acoustic and thermal insulation attachment

Why Choose CD Stud Welding Pins?

• Fast installation — weld times measured in milliseconds, dramatically speeding up large jobs
• No pre-drilling — reduces labor time and tool wear
• Clean, distortion-free welds — minimal heat transfer protects thin-gauge metal
• Strong, reliable hold — securely anchors insulation against sagging, vibration, and settling
• Cost-effective for bulk projects — 1000/pack pricing reduces per-unit cost on large installations

Compatibility

These 12-gauge (.105") pins are compatible with standard CD stud welding guns and are commonly used alongside speed washers, self-locking washers, or clip fasteners for finishing the insulation attachment.