McFeely's ProMax Screws

ProMax® screws are optimized Thread Length to prevent Board Jacking. The screws normally used to install 2 x 4s or 2 x 6s for decking are 3 in. long and have 1 in. of unthreaded shank. Since 2 x 4 and 2 x 6 deck materials are 1-1/2 in. thick, the threads bridge the joint, resulting in either uneven and unsightly surfaces or screws that are over-driven trying to "pull the board down. ProMax screws are different. Thread length is optimized to eliminate cross-threading. Plus, the 1/8 in. L system allows the use of the longest possible screw.