Engineered for strength and reliability, the Steel Black Oxide & Oil Carriage Bolts 3/8-16 x 3-1/2 deliver secure, durable fastenings ideal for wood, metal, and composites. Built from sturdy steel and finished with a black oxide coating and protective oil, these bolts resist wear and corrosion while maintaining a clean, professional appearance.

Key Features

• Size: 3/8-16 (coarse thread)
• Length: 3-1/2 inches
• Finish: Steel with black oxide and oil coating for corrosion resistance
• Head Style: Carriage bolt with domed head and square neck to prevent turning
• Material: Durable steel
• Applications: Ideal for wooden joints, cabinetry, furniture, and light-metal assemblies

Why choose black oxide & oil?

The black oxide finish provides a low-gloss, corrosion-resistant surface with a classic industrial look. The accompanying oil helps reduce wear during use and storage, extending the life of the bolt in various environments.

Easy to install and designed for reliable, long-lasting performance, these carriage bolts are a versatile choice for DIY enthusiasts and professionals alike.