Large Round Washer (Kreg) Screw
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These are wood screws with: a Round Washer Head (rounded top with built-in washer for larger bearing surface), the Original Robertson® square drive, a Lo-Root® Thread, and the Aster® Thread Feature. Lo-Root® Threading provides a single lead deep thread with a wide spacing for superior holding in softwoods and particle boards. Aster® Thread Feature is now standard on all Lo-Root® screws with a serrated tooth thread design, providing quicker starting, reduced splitting and less drive torque. It is recommend to use only Original Robertson® bits together with Robertson® screws for a true "Cling Fit" that provides maximum recess penetration, holding power and driving performance.
• Original Robertson® Fastening System
• With true "Cling Fit" in maximum recess
• Aster® serrated teeth on all Lo-Root Deep Threads provide greatest holding strength in soft woods and particle boards
• Sharp thread angles and points offer excellent penetration and engagement.
All Screws under 1" are fully threaded. Screws over 1" are 2/3 threaded to help prevent "jacking" when two materials are fastened together.