Koswork 4x8mm Hex Set Hardened Steel RC Screws - KOSSS408

The Koswork KOSSS408 hex set screws are hardened steel M4x8mm grub screws designed for use in RC cars and other radio control builds where secure, low-profile fastening is needed. Supplied in a set of eight with a storage container, these are a practical addition to any RC workshop for assembly, maintenance, or field repairs. Hardened steel construction means they hold up under the vibration and stress typical of RC car use, making them a reliable choice when replacing worn or stripped fasteners.

Key Features

• M4x8mm hex set screw (grub screw) dimensions — suitable for a wide range of RC car applications
• Hardened steel construction provides resistance to stripping and deformation under load
• Internal hex drive for precise tightening with a standard hex key
• Comes in a set of 8 screws, packaged in a reusable container for storage and organisation
• Useful as direct replacements for factory screws or for custom RC builds requiring M4 fasteners

What's Included

• 8 x Koswork KOSSS408 4x8mm hardened steel hex set screws
• 1 x storage container

What You Need

• Appropriate hex key or Allen wrench to fit M4 set screws
• Compatible RC car or build requiring M4x8mm grub screws