Hirobo HI2539031 Hexagon Button Bolt M3 x 5, pack of 10 pcs for RC helicopter general parts  [HI2539031]

Hexagon Button Bolt M3 x 5 (10 pcs)

This replacement pack contains 10 pcs of Hirobo hexagon button bolts sized M3 x 5, intended for RC-scale helicopter and model repairs where a low-profile, rounded-head fastener is required. The bolts serve as general-purpose fasteners for frames, linkages, mounts, and assembly points that accept M3 hardware.

Installation notes: use an appropriate hex driver for M3 fasteners, apply light, controlled torque, and avoid overtightening into plastic or thin alloy parts to prevent thread damage. For assemblies with vibration exposure, pair with threadlocker or lock washers as appropriate for the component material.

Tuning and maintenance role: these button-head hex bolts provide a compact head profile that reduces interference with moving parts and linkages, making them suitable for tight clearances commonly found in RC helicopter frames and general parts maintenance tasks.