LINDSTROM Carriage Bolts: Square Neck, 3/8"-16 Thread Size, 1 3/4 in lg, Steel, Grade 5

Lindstrom Grade 5 steel square neck carriage bolts are used for fastening metal to wood or metal in construction, machinery assembly, and industrial maintenance. The square neck prevents rotation during tightening, making them ideal for structural connections in heavy equipment, conveyors, and building frames.

These Lindstrom carriage bolts have a 3/8"-16 thread size, 1 3/4 in length, and are made from Grade 5 steel with zinc-plated finish. The square neck design provides anti-rotation during installation. Manufacturer part number is CAI50370175GEO321+-001P.

3G Electric supplies Lindstrom Grade 5 steel square neck carriage bolts worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine fasteners across 14 departments—and far more—with specialist expertise in combustion, pumps, and controls.

Insert the bolt through a pre-drilled hole matching the square neck profile to prevent spinning. Use a washer and nut on the opposite side, then tighten with a wrench on the nut only—the square neck locks the bolt head. For Grade 5 steel, apply anti-seize lubricant to threads in corrosive environments.