Hammerlok Coupling and Connecting Links
Coupling and connecting links are pieces of rigging hardware that are vital to any rigging operation. Quick links and double clevis links allow riggers to easily connect accessories to rigging chain, as well as to connect segments of rigging chain. They are, however, not rated for overhead lifting and should never be used for such. Hammerlok coupling links on the other hand, are rated for overhead lifting. Hammerlok coupling links are used mainly in the construction of lifting slings to connect the legs of the sling to a master link or to hook attachments. Special coupling links with one round and one flat bearing surface, called Webloks, are used in the construction of synthetic slings.
Here at Tri-State Rigging Equipment we pride ourselves on providing our customers with only the highest quality coupling and connecting links, from only the most reputable manufacturers. We can provide you with any rigging product on the market, so if you cannot find what you are looking for, or if you don’t know exactly what you need, call or email our sales team to speak with a rigging product specialist.
In addition to being used for constructing lifting slings, mechanical coupling links can be used to connect shackles to chain slings and to connect eye bolts to round slings. Coupling links are available in grades 80, 100, and 120 drop forged alloy steel. All coupling links are constructed with a design factor of 4:1 and although they are rated for overhead lifting, they should never be used for chain repair or splicing. Grade 80 coupling links can be configured to handle loads of 2,100-72,300 lbs. and are available in sizes ranging from 7/32” to 1-1/4”. Grade 100 coupling links can be configured to handle loads of 2,700-35,300 lbs. and are available in sizes ranging from 7/32” to 3/4”. Grade 120 coupling links are more of a specialty rigging product and can handle loads ranging from 5,200-17,900 lbs., with sizes of 1/4”-1/2”.
Quick Links & Double Clevis Links
Quick link chain connectors are threaded so riggers can easily and efficiently attach accessories to rigging chain, as well as connect chain segments together. The most common type of quick link is the oval shaped quick link. Quick links are also available in pear, triangle and square shapes to accommodate nearly any rigging application. Quick link chain connectors are not to be used for overhead lifting as they are only available in grade 30 steel.
Unlike quick links, double clevis links are secured using a pin and cotter. They are mainly used in the transportation industry, so they are only offered in grade 70 steel. Double clevis links can be configured with two same-sized clevis ends, or with one big clevis and one small clevis. They are available in sizes ranging from 1/4”-5/8” and can handle loads of 2,600-15,800 lbs. Like quick links, however, double clevis links are not rated for overhead lifting and should never be used for such.
Tri-State Rigging Equipment is a service provider and distributor for all mechanical coupling links, connecting links and chain connectors serving clients from coast to coast, Canada, Mexico and especially focused in the states of Missouri, Illinois, Indiana, Kansas, Arkansas, Mississippi, Nebraska, Tennessee, Kentucky, Iowa, and Oklahoma.