Deck screws are a good example of Optimized Thread Length™. The length of the screws normally used to install 2 x 4s of 2 x 6s for decking are 3" and have 1" of threaded shank. Since 2 x 4 and 2 x 6 deck material is 1-1/2" thick, the threads bridge the joint, as shown, resulting in either 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 cross threading. Plus, the 1/8"e;L System allows use of the longest possible screw.
Head-coated trim-head screws for natural wood add a professional finish to stained natural wood decking, house trim boards or stained fascia boards. McFeely’s head-coated screws come in three grades of corrosion protection: