If the bolt must pass through the post when fastening a hinge to a wood post, which hinge should be used?

• A. Strap hinge
• B. Butt hinge
• C. Lag and strap
• D. Bolt and strap

Answer: (D)

When you need a fastener that goes completely through the post, you choose hardware designed for through-bolts. A bolt-and-strap hinge is built to accept a bolt that passes through the wood post, with the strap spreading the load and helping keep the hinge firmly anchored. This creates a stronger, more secure connection for heavy posts and gates and resists pull-out and loosening over time.

Other hinge types typically rely on screws or lag screws into the face or edge of the post and are not meant for a bolt passing through the post, so they wouldn’t provide the through-bolt security that the bolt-and-strap setup offers.