4897X 4 mm Set Screws with Threadlock (6) |The RC Shop at Dr Dans

This six-pack of 4 mm set screws features integrated heavy-duty threadlock to prevent vibration-induced loosening during high-performance operation. Engineered for critical fastening applications in RC models, these grub screws maintain secure connections on motor shafts, gears, and other precision components. The threadlock formula ensures reliability across demanding driving conditions while allowing for future adjustments when needed.