M4 x 6 Set Screws 10pc - HI2531004 by Hirobo for RC Helicopter Repair  [HI2531004]

Maintenance-grade M4 x 6 set screw spares

This kit includes 10 set screws stamped HI2531004 from Hirobo, intended as spare fasteners for RC helicopter maintenance and light repairs. Each pack holds ten M4 x 6 headless screws suited to securing small components where a compact fix is required.

Fitting advice: choose the matching hex key and tighten with care to prevent thread damage. Verify the thread size and length against the receiving part before final assembly to ensure proper engagement.

Service use: these set screws are ideal for scheduled upkeep, replacing lost hardware during swaps, and making small adjustments to linkages or mounts. Store extras in your field box to keep your model flying between sessions.