Specifications
| Material | Mild steel |
| Standard | ASTM A36 |
| Fits | Square tube 1" to 4" |
| Rod diameter | 3/8" to 3/4" |
| Finish | Plain (black) / Zinc-plated / Hot-dip galvanized |
| Includes | Nuts & washers |
Description
Square U-Bolt — square U-bolt for clamping and mounting square tube and framing. Complete with nuts and washers, sized to the tube.
The square U-bolt has a squared bend rather than a rounded one, forming a flat-bottomed clamp made to grip square and rectangular tube, angle and flat members. Threaded on both legs, it bolts down through a plate with two nuts to hold square sections firmly — common in structural fabrication, fencing and framework where round U-bolts would not seat properly on a flat surface. The square bend matches the profile of the section it clamps.
Square U-bolts are supplied sized to specific square or rectangular sections, in a range of thread sizes and coatings, with matching nuts. Matching the U-bolt to the exact section dimension is key. Confirm the sizes in the specifications below.
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