FastenMaster 6-1/4" ThruLOK Carriage & Through-Bolt Screw, 24-Pack a powerful combination of strength and convenience with its innovative through-bolted connection and the speed of a LOK fastener. Designed to replace traditional carriage and through-bolts in applications ranging from 4-1/2” to 9-1/2”, these screws require no predrilling, making installation faster and easier. Each fastener features a unique three-part assembly consisting of the screw, the patent-pending Paddle Point™, an engineered washer, and a LOK-Nut. Installation is simplified further by compatibility with an 18-volt cordless drill, eliminating the need for drill bits or wrenches. The galvanized coating meets code requirements for treated wood, including ACQ approval, ensuring durability and compliance. Tested to meet the latest IBC/IRC standards, these ThruLOK screws are i for secure guardrail post to rim joist connections, making them a reliable choice for construction and renovation projects. Model Number: FMTHR614-24