Koswork 4x4mm Hex Set Screws Hardened Steel RC Screw Set - KOSSS404

The Koswork KOSSS404 is a set of 4x4mm hardened steel hex set screws designed for use in RC cars and buggies where secure, reliable fastening is essential. Set screws of this type are commonly used to lock grub positions on driveshafts, motor pinions, wheel hexes, and other rotating components where a standard cap-head screw won't do the job. Hardened steel construction gives these screws greater resistance to stripping and shearing compared to standard-grade fasteners, making them a practical choice for keeping critical components locked in place during hard use.

Key Features

• 4x4mm size suits a range of common RC fastening applications including pinion gears, driveshaft collars, and wheel hexes
• Hardened steel construction offers improved resistance to stripping, rounding, and shearing under load
• Hex socket drive for use with a standard hex key or Allen driver
• Supplied in a reusable plastic container, keeping the screws organised in your pit bag or toolbox
• Pack of 8 screws provides useful spares on hand for rebuilds or field repairs

What's Included

• 8x 4x4mm hardened steel hex set screws
• Plastic storage container

What You Need

• Appropriate hex key or Allen driver to fit the socket size of these set screws
• Thread-locking compound (such as Loctite) is recommended for securing set screws on rotating components