Dubro 2-56 Swivel Ball Link 4-40 Rod RC Linkage - DUB369

The Dubro DUB369 swivel ball link is a 2-56 threaded RC linkage connector designed to accept a 4-40 threaded rod, providing smooth, low-friction pivot movement in RC aircraft control linkage systems. Dubro's swivel ball links are a well-established choice for connecting control rods to servo arms, control horns, and pushrods where a rigid straight connection would bind or restrict movement. The 2-56 ball end combined with the 4-40 rod thread makes the DUB369 suited to light to mid-weight RC aircraft applications where precise, rattle-free linkage is important.

Key Features

• 2-56 threaded ball end with 4-40 threaded rod attachment for mixed-thread linkage setups
• Swivel ball design allows multi-axis pivot movement, reducing binding in angled or offset linkage runs
• Compact and lightweight construction suited to small to medium RC aircraft
• Compatible with standard Dubro and equivalent 4-40 threaded clevis rods and pushrods
• Typically sold in a small pack — check quantity on packaging before ordering multiples

What's Included

• Dubro DUB369 2-56 swivel ball link with 4-40 rod fitting (pack quantity as supplied)

What You Need

• 4-40 threaded control rod or pushrod to complete the linkage
• Compatible control horn or servo arm with appropriate mounting hole to accept the 2-56 ball end
• Thread-locking compound recommended for secure installation