Heavy Duty Half Inch By Three And A Half Inch Grade Eight Carriage Bolts 4-Pack With Coarse Thread Round Head Square Neck Anti Rotation Design For Wood Projects SAE J429 Zinc Trivalent Finish
✔️ 1/2 in dia, 3-1/2 in long, UNC 1/2-13, zinc finish
These heavy-duty carriage bolts are designed for wood or composite assemblies and are commonly used in automotive, trailer, machinery, and structural projects. The square neck locks into wood to resist rotation during tightening, enabling installation with a single wrench.
✅ 1/2 in diameter, 3-1/2 in length, UNC 1/2-13 threads
✅ Grade 8 high-tensile strength for demanding loads
✅ Round head with square neck prevents bolt rotation
✅ Clear zinc trivalent finish resists corrosion
💡 What is a heavy-duty carriage bolt used for in wood and metal projects? Handy fastener for tough assemblies. - Used to join wood or metal with a square neck that resists rotation - Provides high load and shear strength for demanding assemblies - Comes in a 4-pack with 1/2 x 3-1/2 inch dimensions and zinc finish - Fits 1/2"-13 UNC threaded hardware for reliable clamping
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