Widespread Industrial Supplies Inc. is a full line industrial supply company specializing in fasteners cutting tools electrical welding chemical and safety related supplies as well as hand & power tools. Our products include abrasives anchors carriage bolts cutting tools drywall screws electrical supplies flange bolts / stove bolts grease fittings hex head cap screws lag bolts machine screws metric fasteners nuts and pins. We also offer pipe fittings safety equipment self-drilling screws sheet metal (tapping) screws socket products tamper-proof screws threaded rods/stud bolts/coupling nuts washers welding supplies and wood screws. Carriage bolts have a square neck that keeps them from turning after installation. We can put them into a round or square hole and tighten with a nut. It is used to fasten wood-to-wood and metal-to-wood. Our carriage bolts are made using zinc plated stainless steel and hot-dipped galvanized materials.