Marquip shackles offer maximum load capacity and safety for marine and construction heavy lift operations utilizing a 6:1 working load limit. Wide jaws facilitate easy installation on chains, flounder or tow plates, tow wires, bell shackles and pad eyes. Both bails and pins are forged of 4340 extra high strength alloy steel. Each pin is then specially machined and individually precision fitted to its shackle to minimize wear from heavy or surging loads and vibrations. All shackles and pins are heat treated and magnetic particle inspected. Working load limits range from 40 tons to 185 tons, depending on shackle size and style. See specifications.
Safety type pins used on all shackles–all sizes. All through pins are available with double or single safety nuts secured by cap screws, with hex nuts and cotter keys to prevent backing off due to vibrations.
Pin ends are tapered. All certifications are available on request. With our 2,000,000 pound (1,000-ton) tensile strength testing machine, we can provide A.B.S., Lloyd’s Shipping, I.L.O. or other cargo bureau certificates as required.