Step Bolts
Step bolts have a smooth, low, round, wide head that permits movement over the surface. It has an unthreaded neck, but is threaded towards the end of the bolt. They also have a similar bearing surface and square neck design to carriage bolts.
Frequently Asked Questions About Step Bolts
What is a step bolt used for?
Step bolts are often used in decking applications, or in other applications where wood is bolted down. This is because the larger diameter of the bolt’s head will not pull through soft wood. They are also used in applications where safety is a high priority, due to the safe finish the bolt’s level neck provides.
What sizes do step bolts come in?
AFT carries a wide range of step bolt sizes. Diameters range from No. 10 thru 3/8” diameter, and lengths range from 3/4” to 4”.
What materials and finishes are step bolts available in?
Step bolts are made of steel, and come in either a plain finish or a Zinc CR+3 finish if the application requires extra corrosion/rust protection.
How do you measure a step bolt?
There are three core dimensions involved in measuring a step bolt: diameter, length, and thread pitch. To measure the thread length, it will equal twice the basic bolt diameter plus .25”.
What’s the difference between a step bolt and a carriage bolt?
Carriage bolts have a head that is more domed, deeper, and smaller. By contrast, a step bolt’s head is wider and flatter.