Temper Axle Products Temper-Loc premium axle spindle nuts offer precision for single nut locking of wheel end adjustments and are now available in national distribution. Locking is assured with positive engagement of the spindle keyway with an easy-to-install fingertip control retainer and three EasyView tabs that permit visual confirmation of security of proper installation. With Temper-Loc spindle nuts, technicians use Doctor Preload bearing adjustment tools to set bearings to industry standard light preload settings. Elimination of endplay creates optimal performance of all wheel end components and reduces maintenance costs. Made in U.S.A.