Building Material Galvanized Steel Wedge Pin Stub Pin for Formwork System

A wedge pin is a simple yet highly effective mechanical fastener consisting of a tapered pin that is driven into a matching hole or between two components to lock them together. The taper creates a powerful frictional and mechanical lock that tightens under load, making it resistant to vibration and shock.

The principle is based on controlled taper interference: The pin has a slight taper (typically 1:100 to 1:20 ratio) When driven into a straight hole or between parts, the taper forces material outward This creates radial pressure and friction, locking the pin in place Unlike a straight pin, it becomes tighter when pulled or loaded

Standard Taper Pins: Simple cylindrical pins with uniform taper Slotted Wedge Pins: Have a longitudinal slot allowing slight compression during insertion Grooved Wedge Pins: Feature circumferential grooves that deform material for extra locking Threaded Wedge Pins: Combine taper with threads for adjustable preload Quick-Release Wedge Pins: Include a retention ring or spring mechanism (often called "linch pins")

Vibration Resistance: Actually tightens under dynamic loads Easy Installation/Removal: Can be installed with simple hammering; removed with a drift punch No Threads to Strip: Eliminates thread wear issues Shear Strength: Excellent for transmitting shear loads Self-Aligning: Helps align mating components during assembly Reusable: Can be used multiple times in same application

Heavy Machinery: Connecting linkages, lever arms, and control rods Construction Equipment: Bucket teeth, blade attachments, boom connections Railway Systems: Track fastening, coupler mechanisms Agricultural Machinery: Implement attachments, tillage components Tooling & Fixtures: Securing cutter heads, die sets, mold components Structural Steel: Temporary bracing and alignment during erection Traditional Woodworking: Furniture joinery and timber framing