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U-Bolts (62)
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Frequently Asked Questions About U-Bolts
How do I size a U-bolt?
Match the inside width of the U-bolt to the outer diameter of the pipe or round stock. The inside width should sit close to that measurement – a large gap allows movement that can loosen the connection over time.
What are U-bolts used for?
U-bolts secure pipe, conduit and round stock to a mounting surface or structural frame. They’re common in fence installations, trailer frames and equipment repairs anywhere the fastener needs to grip the outside of a cylindrical part.
What is the difference between zinc-plated and galvanized U-bolts?
Zinc plating adds thin rust protection suited for dry settings, while hot-dip galvanizing applies a heavier coat built for outdoor exposure and moisture. For year-round outdoor hardware, galvanized U-bolts will hold up longer.
U-Bolts
U-bolts grip pipe, tubing and round stock securely, wrapping around materials to clamp them tightly to a mounting surface. These fasteners are available at Tractor Supply in a range of sizes and finishes for farm, shop and field work.
Clamping Hardware Built for Round Stock and Pipe
A U-bolt is a threaded fastener bent into a “U” shape, with both legs extending upward to accept a mounting plate and nuts. This unique shape allows the U-bolt to wrap securely around pipe or round stock, locking tightly to a mounting surface – something other bolts cannot achieve. Their steel construction provides lasting strength, ensuring dependable performance even under vibration and shifting loads common in agricultural and construction work.
Finish affects how long that hold lasts. Zinc-plated U-bolts resist surface rust in dry or sheltered settings, such as covered bays and workshops, while galvanized versions feature a thicker coating for outdoor use and moisture exposure.
Sizing by Reach and Application
Leg or fastener length is the distance from the bend of the U-bolt to the end of the threaded rod. This measurement determines how much exposed thread is available for the mounting plate and nuts. Shorter leg lengths, such as 1-3/8 in., provide sufficient thread for a standard plate and two nuts in straightforward installations. Longer leg lengths, up to 6-1/2 in., accommodate thicker plates and extra hardware, including washers and additional nuts. Selecting the correct leg length ensures the nuts can be fully tightened without running out of thread.
Diameter by Application and Strength
A U-bolt’s rod diameter determines the load it can withstand before flexing. A 1/4-in. diameter is ideal for lighter tasks, such as securing conduit or lightweight pipe, while a 5/8-in. rod is designed for heavy-duty applications, including structural pipe runs. Mid-range diameters cover most irrigation and trailer hardware needs without requiring special configurations. Always verify the rod diameter matches the plate hole size to ensure a proper fit for the complete assembly.
Discover U-Bolts at Tractor Supply
Every successful project For Life Out Here starts with the right hardware, and U-bolts are no exception. Our hardware selection includes a comprehensive range of U-bolt lengths and diameters for agricultural, construction and trailer needs. Browse our website or stop by your local Tractor Supply store to find the perfect fit.