Secure your logs in place while cutting tenons, tapering the log, peeling the bark and more with our Log Lock™ Heavy Duty Bundle, including TWO Heavy Duty Log Locks™. These heavy-duty Log Locks™ are designed for high production users. The Log Lock™ Heavy Duty – LL1545HD can accept logs 1-1/2″ to 4-1/2″ in diameter. The Log Lock™ XL Heavy Duty – LL2580HD can accept logs 2-1/2″ to 8″ in diameter.

Heavy Duty Features:

• The threading is cut coarser on the handle nut, jam nut & carriage bolt
• STANDARD hardware uses ½” – 13 UNF (Unified fine thread). UNF is commonly used in machine screw parts
• HEAVY DUTY hardware uses ½” – 10 ACME
• UNF threading is shaped like ^ whereas ACME threading is shaped like a trapezoid. It will take a much greater force to strip this kind of threading
• The standard 13 UNF is good and works for 80% of customers. The 10 ACME is designed for high production users.