Temper-Loc Nut® Trailer Precise Positioning With Temper-Loc Spindle Nuts. The Temper-Loc® precision single-locking nut system provides bearing adjustment with pinpoint accuracy; each Temper-Loc nut is manufactured to ultra-tight machining tolerances. The nut system sets optimal wheel-end preload maximizing tyre life and vehicle uptime. With its unique chamfered mounting face, Temper-Loc is the exclusive spindle nut used in conjunction with the Doctor Preload bearing adjustment tool.
