Steering Shafts Borgeson does not recommend using less than 3/4” diameter steering shaft. We will not sell a shaft with a smaller diameter due to safety considerations. For example a 5/8” shaft is 42% weaker than a 3/4” shaft and can be twisted with a 14” steering wheel. Borgeson offers three basic steering shaft types; splined, Double-D and Telescopic. Splined Steering Shaft Borgeson manufactures splined steering shafts in steel, stainless steel, polished stainless and aluminum. All of our splined shaft has a 3/4”-36 spline. Steel and aluminum shafts have 2” of spline on each end and are available in 2” increments from 2”-36”. These can easily be trimmed up to 1” off each end for a precise fit. Stainless steel and polished stainless splined shafts have only 7/8” of spline on each end but are available in 1/4” increments from 3”-24” so we are sure to have the shaft you need. Double D Steering Shaft Borgeson Double-D steering shafts are available in steel, stainless steel and polished stainless. The advantage to Double-D shaft is the flexibility it offers. With Double-D steering shaft it is not necessary to know your exact shaft lengths. Double-D shaft is sold in 18”, 22” or 36” lengths and can be easily trimmed to any length. Universal joint phasing is also fixed with DD shaft and cannot be altered. Telescopic Steering Shaft Borgeson offers telescoping shaft assemblies in 24” and 36” overall lengths. These shafts can be used in a variety of applications and make installation and removal of steering system components simple and easy. The telescopic action also acts as a collapsible shaft offering an added measure of safety. One end of the assembly is a 3/4”DD shaft and the other end is a 1”DD tube. The assembly can be trimmed to fit shorter applications. Telescoping shafts are available in steel only.