Hirobo HI2539031 M3 x 5 Hex Button Bolts — 10 pcs for RC Helicopters  [HI2539031]

M3 x 5 Hex Button Bolts — Set of 10

This pack includes ten Hirobo hexagon button bolts, each M3 x 5, intended for model repairs where a rounded, low-profile head is preferred. These fasteners are suitable for frames, servo mounts, linkages, and other M3-compatible assembly points.

Installation guidance: select an appropriate M3 hex/allen driver, tighten with steady, moderate torque, and avoid over-torquing into plastic or thin alloys to protect threads. For parts exposed to vibration, use a compatible threadlocker or locking washer as the situation requires.

Role in adjustment and upkeep: the button-head design helps minimise snagging and interference with moving parts, making them practical for compact mechanical assemblies found in RC helicopters and models.