Tamiya TT-01 Heavy Duty M3 x 18 Step Screw - Replacement for TT-01 TYPE E - TT01-10/HD by 3Racing  [TT01-10/HD]

High-strength step screw for TT-01 chassis use

This M3 x 18 step screw is a replacement part for Tamiya TT-01 and TT-01 TYPE E chassis assemblies. The stepped shoulder helps position chassis plates and mounting points without additional washers, aiding tidy builds and reliable location.

Compatibility is restricted to the models named in the title, and the steel construction provides a heavy-duty alternative to stock hardware when firmer clamping is preferred during assembly, maintenance, or setup work.

Fitting guidance: use the correct hex driver for the screw head, align components before engagement, and apply measured torque to avoid stripping threads in plastic or composite chassis parts. Re-check tightness after a short shakedown run and again after break-in to maintain consistent setup.

Setup advantage: replacing softer screws with heavier step screws can limit head deformation and help keep suspension and gearbox interfaces aligned under load, supporting steadier handling between adjustments.