PrimeSource
RSS screws which are 3-1/8" and longer have a six threaded CEE thread that enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increasing the screw’s drawing strength. The CEE thread also reduces the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood. This is why the RSS screw is an efficient lag screw alternative.
Centurion Price Channel Chips
Monster Fastener Star Drive Tan XL1500 SaberDrive® Trim Screws
National Hardware Lag Screw Eyes #6, 5/16" x 6", Storm Shine
Coated Pin Nails, 23-Ga., 1-In., 3000-Ct.
Hillman Hammer Drive Anchor 1/4" x 1-1/2"