J anchor bolts are hooked foundation bolts with a 180° curved end, and we manufacture them in our Umm Al Quwain plant from M12 to M100. The hook is formed on a radius die, the shank is thread-rolled and every batch is inspected in-house and independently tested before it ships with its material certificate.
A J anchor bolt (J bolt, J-type foundation bolt) has a curved hook rather than the sharp 90° bend of an L bolt. The hook locks into the concrete to resist pull-out and is often preferred where the bolt sits close to a foundation edge or where the designer wants a tighter, self-centering anchorage. J bolts are cast in place, usually held by a template, and used with two nuts and a plate washer at the base plate.
Applications
- Light and medium steel column bases
- Pole foundations for lighting, signage and CCTV
- Equipment skids and pump bases
- Timber and steel sill plate hold-downs
- Fencing, gantry and cable tray supports
- Prefabricated cabin and shelter foundations
Standards, grades & finishes
Manufactured to ASTM F1554 Grade 36 / 55, ISO 898-1 class 4.6 / 8.8 or to your drawing, from S275JR or S355JR bar. Threads metric coarse or UNC. Available self colour, hot-dip galvanized to ISO 1461 / ASTM F2329 or zinc plated. Hook radius, total length and projection are made to the dimensions you specify.
Anchor bolts, studs and plate washers are manufactured in our own ISO 9001:2015 plant in Emirates Modern Industrial Area, Umm Al Quwain, with calibrated in-house dimensional and thread inspection. Tensile, hardness and chemical testing is carried out by independent UAE-accredited laboratories, and EN 10204 3.1 certificates are issued with every batch. We supply across the GCC, MENA and Africa.