Dubro Socket Head 4-40 x 1/2 Cap Screws Tool - DUB571

The Dubro DUB571 socket head 4-40 x 1/2 cap screws are stainless hardware fasteners designed for use in RC aircraft builds, repairs, and custom assemblies. The 4-40 thread size is a standard in RC aircraft construction, making these cap screws a reliable choice for securing components where a clean, recessed hex-socket finish is needed. Dubro is a long-established name in RC hardware, and the 571 fits neatly into their wide range of quality fasteners aimed at builders and technicians working on fixed-wing and other RC aircraft.

Key Features

• Socket head (cap screw) design accepts a hex key driver for secure, precise tightening in tight spaces
• 4-40 thread size is a widely used standard in RC aircraft airframe and component assembly
• 1/2 inch length suits a range of mounting tasks including motor mounts, control horns, and servo trays
• Sold as a set, providing useful stock for builds or bench repairs

What's Included

• Dubro DUB571 socket head 4-40 x 1/2 cap screws (quantity per pack as packaged by Dubro)

What You Need

• Appropriate hex key or Allen driver to suit the socket head size