One Half Inch Thirteen UNC Carriage Bolts Two And A Half Inch Long Silicon Bronze Alloy 651 Nonmagnetic Corrosion Resistant Round Head Square Neck Marine Hardware Saltwater Ready Ships Free In The USA

1/2-13 UNC Silicon Bronze Carriage Bolt, 2.5in, Single
✔️ 1/2-13 x 2.5 in, Round Head, Square Neck, Alloy 651

These carriage bolts are 1/2 inch (12.7 mm) diameter and 2.5 inch (63.5 mm) long, with a 1/2-13 UNC thread. Made from Alloy 651 silicon bronze, they’re nonmagnetic and highly corrosion resistant, ideal for saltwater marine hardware. Common applications include deck fittings, boat hardware, and other saltwater projects where heat and electrical conductivity matter.

✅ 1/2-13 UNC thread size
✅ Alloy 651 silicon bronze, nonmagnetic
✅ Round head with square neck for solid seating
✅ High corrosion resistance in saltwater environments
✅ Minimum Rockwell hardness B70; tensile strength approx 70,000 psi

💡 What is a pillow block bearing used for? Pillow block bearings support rotating shafts in machinery, helping align and mount parts accurately. - Handy for DIY projects and light industrial setups - Helps maintain shaft alignment and reduces wear - Used in conveyors, pumps, and equipment where routine maintenance matters