Metallics UB06 Bolts 1/4-20 X 2-1/4 X 1-1/4 U-Blt & (Bag 10)

The UB06 u-bolt is 1/4-20, right hand thread, and it ships with two hex nuts per bolt. Thread form follows ANSI/ASME B1.1 at 20 threads per inch, so standard 1/4-20 hardware store nuts and washers will thread on if you lose one. No washers or mounting plate are supplied, just the u-bolt and its two nuts.

The UB06 is called out as 1/4-20 x 2-1/4 x 1-1/4. The 1-1/4 inch figure is the inside width between the legs, which is what determines what the u-bolt will wrap, and 2-1/4 inch is the leg length available for the bracket thickness plus the two nuts. Measure the outside diameter of what you are clamping: anything with an OD under 1-1/4 inch will seat, and the balance is taken up by the strut, angle, or channel the legs pass through.

UB06 is bagged 10 per bag, with an order minimum of 10 each. So one bag is the smallest purchase. Metallics states other sizes and quantities are available by request if you need a different count for a large run.

Finish is zinc over steel, which handles indoor and protected-exterior work such as mechanical rooms, parking structures, and covered runs. Zinc plating is not a marine or chemically aggressive coating, so for coastal exposure, continuous wet service, or wastewater areas, specify a stainless or hot-dip galvanized u-bolt instead.

Metallics lists the UB06 as both ARRA compliant and Buy American compliant, which is what a public-works or federally funded specification usually asks for on fasteners. Country of origin is recorded as multiple, so if your contract requires a single named origin on the submittal, confirm the origin on the lot you receive.