Released On 26th May 2026

Bolt Head Types Explained

Different bolt head designs are intended for different installation methods and applications

Hex Head Bolts

Most common fastener type.

Typical uses:

• Construction
• Engineering
• Machinery

Socket Head Bolts

Used where installation space is limited.

Typical uses:

• Machinery
• Precision equipment

Coach Bolts

Rounded head with square neck.

Typical uses:

• Timber structures
• Decking
• Fencing

Countersunk Bolts

Designed to sit flush with the surface.

Typical uses:

• Furniture
• Joinery
• Decorative work

Flange Bolts

Include a built-in washer surface.

Typical uses:

• Automotive
• Machinery

FAQ

Which bolt head is strongest?
Strength depends more on material and grade than head shape alone.