[100 PKG] Steel Black Oxide & Oil Carriage Bolts 1/2-13 X 2-1/2

Engineered for dependable, long-lasting joints, the Steel Black Oxide & Oil Carriage Bolts 1/2-13 x 2-1/2 offer robust performance for wood, metal, and mixed-material projects. The combination of steel with a black oxide finish and an oil treatment provides a durable, low-friction fastener suitable for indoor and light-industrial environments.

Key features:

• Size: 1/2" diameter, 13 threads per inch (UNC), 2-1/2" long
• Finish: Black oxide with oil for corrosion resistance and lubricity
• Head: Carriage bolt with a square neck—prevents turning during installation
• Material: Steel

Why choose these carriage bolts? They are ideal for securing wood-to-wood or wood-to-metal joints in furniture, cabinetry, pallets, fencing, decking, agricultural equipment, and machinery enclosures. The square neck seats into the material to help keep the bolt from turning as you tighten the nut, ensuring a clean, flush installation.

Technical advantages:

• Excellent shear strength for everyday fastening tasks
• Simple, reliable installation with standard tools
• Compact, low-profile head design for a clean, finished look

Tips for use: Use with a corresponding nut and washer; drill a pilot hole to the correct diameter for a smooth, wobble-free fit. Store in a dry place to maintain the finish.