Bolts and Nuts Kit :These 3/8-16 x 4" carriage Bolts slip resistant efficiency,with square neck beneath the round head locks firmly into pre-drilled holes or wood, preventing rotation during assembly, ensuring stable fastening,square neck reduces loosening by 80% vs. standard 3/8 16 carriage bolts.the round head provides a smooth and clean appearance,widely use in furniture, construction, and machinery. Durable Construction:carriage bolts 3/8 are made from 304 stainless steel 18-8,High rust-proof performance,ideal for humid or chemical environments.offering tensile strength of 70,000–150,000 psi. Wide Compatibility:suitable for diverse industrial and DIY projects.wooden beams, decking, and structural frameworks,chair/table assembly with hidden fastening and anti-loosening benefits,heavy-duty machinery maintenance due to vibration resistance,Trailer and wagon building, leveraging high shear strength. Easy to use:Pre-drill a hole matching the 3/8 16 stainless steel bolts,push the square neck into the material until the head sits flush,Tighten the nut. Bolts Nuts Washers Kit:You can get 6 sets 3/8-16 x4" stainless carriage bolts,package includes matching hexagonal nuts and flat washers.Thread Diameter:3/8"; Thread Pitch:1/16"; Screw Length: 4 In; Head Diameter, 0.84". Complies with ANSI/ASME B18.5 Carriage Bolts Screws, 304 Stainless Steel 18-8, Round Head Square Neck, Carriage Bolts and Nuts Kit, with Flat Washers

These bolts can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. The bolt kit is suitable for woodworking, pergolas, fences, docks, swingsets, replacing steel bolts on snow blower, attaching the legs on cornhole boards, garage door hardware replacement, lawn mower push handle screws replacement, and so on.
Color: stainless steel silver

Material: 304 stainless steel
Head type: round head, square neck
Thread type: coarse thread, UNC, fully threaded