Dubro Sock Head Cap Screw 4-40x1 Tool - DUB3118

The Dubro 3118 sock head cap screw in 4-40 x 1 inch is a stainless or alloy fastener designed for use in RC aircraft builds and repairs where a recessed hex-drive fixing is needed. DUB3118 is a standard 4-40 thread size widely used across RC aircraft frames, servo mounts, and hardware assemblies, making it a practical item to keep in the workshop.

Key Features

• 4-40 thread size is one of the most common fastener standards in RC aircraft construction
• Sock head (socket cap) profile allows a hex key to seat securely for a firm, controlled fix
• 1 inch length suits a range of mounting depths typical in RC aircraft hardware
• Small, lightweight fastener suitable for weight-sensitive airframe applications

What's Included

• Dubro 3118 4-40 x 1 inch sock head cap screws (quantity as packaged)

What You Need

• Appropriate hex key or Allen wrench to fit the socket head drive size