Specifications
| Material | Black iron (uncoated mild steel) |
| Standard | ASTM A53 / BS 1387 |
| 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
Black Iron Square U Bolt — square U-bolt for clamping and mounting square tube and framing. Complete with nuts and washers, sized to the tube.
The black iron square U-bolt is a plain, uncoated square U-bolt for clamping square tube, angle and flat members in dry or interior conditions, or where the assembly will be painted. The squared bend seats flat against square sections, and the economical black finish suits indoor structural fabrication and shop work. For outdoor or wet applications, a galvanized or stainless U-bolt is chosen instead.
Black iron square U-bolts are supplied sized to specific square-section dimensions, in a range of thread sizes, with matching nuts. Matching the clamp to the exact member size ensures a firm grip. See the specifications below for available sizes.
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