Technical M3 x 18 Step Screw for Tamiya TT-01 Chassis - TT01-10/HD by 3Racing  [TT01-10/HD]

Precision heavy-duty step screw for TT-01

This M3 x 18 step screw is specified as a direct replacement fastener for Tamiya TT-01 and TT-01 TYPE E chassis assemblies. The machined step shoulder provides accurate location for chassis plates and related mounts, removing the need for separate locating washers in many applications.

The item is supplied as a heavy-duty steel option to improve clamp integrity compared to standard hardware, intended for builders seeking consistent clamp force during repeated assembly, competitive setup changes, or workshop maintenance.

Installation protocol: use the correct hex bit to avoid cam-out, align parts before initial engagement, and apply controlled torque that matches the substrate strength to prevent thread damage in polymer chassis. Confirm fastener torque after a measured test run and after initial mechanical settling to ensure reproducible setups.

Performance considerations: installing heavier step screws reduces fastener deformation under load and assists in maintaining suspension and gearbox geometry under dynamic conditions, supporting repeatable handling characteristics when tuning or testing.