Hexagon Button Bolt M3 x 6 HIROBO HI2539017 - Screw for RC Helicopter General Parts  [HI2539017]

M3 x 6 hex button bolt explained

This is the HIROBO HI2539017 M3 x 6 hexagon button bolt intended for RC helicopter general parts and other small model assemblies. The button-head hex profile keeps the fastener low and tidy while securing light structural pieces.

Installation notes: use the correct hex driver and avoid applying excessive torque to prevent thread damage in aluminium or plastic mounts. Ideal for fastening frame plates, servo supports, and non-load-bearing brackets where a neat finish is desired.

Maintenance and tuning: keep spare bolts in your kit and verify tightness after every flight; replace any fastener with stripped threads or head damage. Achieve repeatable results by installing with controlled hand torque and reserve thread-locker for permanent joints.