Sparta offers fully engineered steel and aluminum load beam turnbuckles. Our steel turnbuckles feature a 6061 aluminum body for weight reduction along with stainless steel threaded inserts and high tensile steel welded end fittings for great durability and longevity. The aluminum turnbuckles are made entirely from 6061-T6 aluminum with no welded joints. The end fittings are CNC machined from billet aluminum so there are no weak points in the system. Our aluminum turnbuckles are certified and rated for 6000 operating hours at 55,400 lbs max load.