RC Helicopter Replacement Set Screws M4 x 6 (10) HI2531004 Hirobo  [HI2531004]

Compact M4 x 6 set screws for repair and tuning

This 10-piece pack is labelled HI2531004 from Hirobo and is offered as spare set screws for RC helicopter repair and tuning work. The selection includes ten M4 x 6 headless screws suited to securing tight-fitting parts in model assemblies.

Tuning tip: when using these screws for fine adjustments, check alignment and thread engagement before tightening to maintain smooth movement in linkages. Use the correct hex driver and moderate torque to protect threads.

Field repair role: carry a pack of these screws to replace lost or worn fasteners during practice or competition runs, helping you get back in the air quickly. They are intended for routine replacement and small setup tweaks.