Reliable Strength for Everyday Workshop and Engineering Applications

These Grade 5 UNC hex head bolts are manufactured to ASME B18.2.1 standards and are designed for dependable fastening across automotive, fabrication, engineering, machinery, trailer repairs, and general workshop applications.

Manufactured from Grade 5 steel with a zinc-plated blue passivated finish (A2K), these bolts provide excellent strength, durability, and corrosion resistance for indoor and general outdoor use.

The UNC (Unified National Coarse) thread design offers fast installation and dependable holding power, making these bolts ideal for equipment that requires reliable fastening and regular maintenance.

Available in a wide range of imperial sizes, these bolts are commonly used throughout the automotive, engineering, agricultural, industrial, and fabrication industries.

Why We Use Them in the Workshop

• Grade 5 high-strength steel construction
• Zinc-plated blue passivated finish for corrosion resistance
• UNC coarse thread for quick installation and reliable fastening
• Suitable for automotive, fabrication, and engineering applications
• Compatible with standard UNC nuts and washers
• Reliable workshop-quality imperial fasteners

Product Details

• Standard: ASME B18.2.1
• Material: Grade 5 Steel
• Finish: Zinc Plated, Blue Passivated (A2K)
• Thread Type: UNC (Coarse Thread)
• Head Type: Hex Head

Ideal For

• Automotive repairs
• Fabrication projects
• Engineering applications
• Trailer repairs
• Machinery assembly
• Agricultural equipment
• Workshop maintenance
• General imperial fastening

Built for Everyday Performance

Whether you're repairing equipment, building a trailer, fabricating components, or maintaining machinery, these Grade 5 UNC hex head bolts provide dependable strength and reliable performance for everyday workshop use.

Looking for UNC bolts near you? Shores NZ Fabrication stocks a growing range of imperial fasteners, available online or from our Henderson, Auckland workshop.