Your cart is empty.
Your cart is empty.A carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood. It is distinguished from other bolts by its shallow mushroom head and that the shank cross-section of the bolt is circular for most of its length, as usual, but the portion immediately beneath the head is formed into a square section. This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank. Carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam. It is commonplace though to use them to bare timber, the squared section giving enough grip to prevent rotation.
Basman
Reviewed in the United States on February 25, 2025
Worked great on gate fence
L.Ray Sigmon
Reviewed in the United States on June 23, 2024
Product is as described
Treeman
Reviewed in the United States on July 2, 2023
Nice smooth head!
Mark
Reviewed in the United States on April 10, 2023
They are what they say. Worked great
Dave M
Reviewed in the United States on November 29, 2022
I use these for my Adirondack chairs, and they look good against the western red cedar!
Angus
Reviewed in the United States on September 23, 2021
Quality was very good, but I had to order more than I really needed.
Mitch
Reviewed in the United States on November 10, 2021
I used it on a project to replace the hardware for a bench. The bench is located outside, 1/4 mile from the ocean. We get thick marine fog very often, and rain occasionally. The stainless has kept its gleam, unlike cheap “stainless” that eventually rusts.
Jim R.
Reviewed in the United States on June 5, 2019
Product quality was excellent in appearance, form, fit and function. Product came bagged in a sealed heavy duty plastic and placed inside a small box. Product was used to replace rusted steel bolts on an old wrought iron garden bench that I am restoring. Exact fit and function as the original. Great product for my garden project or household uses.
Recommended Products
