The reason is that the tubes create asymmetric radial forces as the nut rotates. Radial forces cause vibrations and instability at high speeds. The Saginaw steering gear was a ball screw used on
Nitrostreet blower plates3/16" SS Tubing "Inline Tube". 3/16" SS Tubing "Good Vibrations Racing". 3/16" SS Tubing "Godman Hi-Performance". Aluminum & Steel tube nuts and sleeves AN -03. Stainless steel tube nuts AN -03 "Godman Hi-Perf". Stainless Steel Tube Sleeve AN -03 "Godman". Tubing Bender Tools for above line.
Enderle's hat lines are made from seamless Stainless Steel tubing. Precisely bent and flared for each application. Has anodized aluminum tube nuts and steel sleeves.Tube Nuts and Sleeves - Good Vibrations MotorsportsXRP AN tube nut. Designed to adapt plain metal tubing for use with AN type fittings. Machined from billet aluminum and anodized black for durability and corrosion resistance. Utilizes JIC 37° flare for positive sealing to prevent leaks. Requires the use of a tube sleeve.