8 x 1-7/8 in. ProMax Flat Head Wood Screw Dry-Lube

Promax Screws

Whether you are building some great-looking 2 x 4 furniture or doing a bit of light framing, ProMax Optimized Thread Length wood screws will make construction easier. The extra-long unthreaded shank prevents cross-threading or jacking without the need for a clearance hole, and the 1/8 length system allows use of the longest screw possible without fear of backside protrusion. These Square Drive flat head wood screws have self-drilling auger points, self-countersinking nibs, and have a light “ lube” finish suitable for interior, non- visible applications. Made in China. #2 Square Recess. Unthreaded Length 1-1/16"

ProMax™ Optimized Thread Length™: What It Means and Why You'll Like It!
Deck screws are a good example of Optimized Thread Length. The screws normally used to install 2 x 4's or 2 x 6's for decking are 3 in.es long and have 1 in. of unthreaded shank. Since 2 x 4 and 2 x 6 deck material is 1-1/2 in.es thick, the threads bridge the joint, as shown, resulting in an uneven and unsightly surface, or screws that are over- driven trying to “ pull the board down.”
ProMax™ screws are different: Thread length is optimized to eliminate crossthreading, and the 1/8” length system allows use of the longest possible screw. In most cases, the smooth shank and self- drilling point allow installation without predrilling! Just select a screw that provides an unthreaded shank length equal to or slightly greater than the material thickness being fastened.