CASE IH International McCormick Tractor 3 Point Hitch Check Chain Threaded Adjuster Trunnion Stud. This is part of the sway check assembly. These are used in many International Case IH and McCormick tractors manufactured since the early 1970s thru Current models PN# 1537507C1 These are for the outside check chain assemblies on the following models using a CAT 2 Hitch. 54, 64, 74, 85, 95, 3200, 4200, C and CX tractors. These sell for over $26 each at the dealer so save here Very high quality Save here L4A4