Dubro Sock Head Cap Screw 4-40x3/8 Tool - DUB570

The Dubro DUB570 4-40 x 3/8 socket head cap screw is a precision RC aircraft hardware fastener designed for use in model aircraft construction and maintenance. Dubro socket head cap screws are a popular choice among builders who need a reliable, properly sized fastener for securing components where a standard hex key drive is preferred over a Phillips or slotted head.

Key Features

• 4-40 thread size and 3/8 inch length make this a commonly used fastener size in RC aircraft assemblies
• Socket head (hex key) drive provides better torque engagement and reduces the risk of cam-out during installation
• Manufactured to consistent thread tolerances, making these screws suitable for repeated removal and reinstallation
• Compact head profile suits tight or recessed mounting points found in RC airframes and component mounts

What's Included

• Dubro 4-40 x 3/8 socket head cap screws (DUB570) — quantity as packaged

What You Need

• Appropriate 4-40 hex key (Allen wrench) or hex driver bit for installation
• Compatible 4-40 tapped holes or nuts depending on your application