Dubro 4-40x1 Sock Head Cap Screw Tool - DUB312

The Dubro DUB312 4-40 x 1 socket head cap screw is a precision RC hardware fastener designed for use in RC aircraft builds, repairs, and assemblies. Dubro is a long-established name in RC hardware, and these socket head cap screws are a go-to choice when you need a secure, clean-looking fastening point in tight or recessed spaces on airframes, motor mounts, servo trays, and control linkages. The 4-40 thread size is one of the most common in smaller RC aircraft, making these a practical stocking item for any workshop bench.

Key Features

• 4-40 x 1 inch thread specification suits a wide range of standard RC aircraft hardware applications
• Socket head design accepts a hex key for a clean, flush-fitting installation in recessed locations
• Dubro hardware is manufactured to consistent thread tolerances for reliable, repeatable fit
• Suitable for use in airframe assembly, motor mounts, servo installation, and general RC fastening tasks

What's Included

• Dubro DUB312 4-40 x 1 socket head cap screws (quantity as per packaging)

What You Need

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