This Yukon Gear & Axle pinion nut fits GM 7.6" and 8.6" IRS applications and some Ford 9.75" assemblies, specified as 22mm x 1.5 thread and using a 32mm socket. It’s supplied as a replacement nut for pinion reassembly where those IRS housings or compatible Ford units are serviced. Yukon’s collection of differential small parts provides the complementary hardware for proper axle maintenance.
Yukon Gear Pinion Nut