Dubro Swivel Ball Links 4-40 Bulk RC Linkage - DUB861

The Dubro 861 swivel ball links are 4-40 threaded RC linkage components used to connect control rods to servo arms and control horns on RC aircraft. Sold in bulk, these swivel ball links give you a clean, articulating connection that pivots smoothly under control input, helping keep linkage movement free and reducing binding. The 4-40 thread (part DUB861) is a common size on larger sport and scale planes, so these radio control ball links suit a wide range of fixed-wing setups where you need reliable, adjustable control geometry.

Key Features

• 4-40 threaded ball links for standard RC aircraft linkage hardware
• Swivel design allows the link to pivot, keeping control movement smooth
• Supplied in bulk for builders working on multiple aircraft or stocking spares
• Threaded fitting allows fine length adjustment for accurate control throws
• Suited to sport and scale fixed-wing models using 4-40 pushrods

What's Included

• Bulk pack of Dubro 4-40 swivel ball links

What You Need

• 4-40 threaded pushrods or control rods to thread the links onto
• Control horns and servo arms to complete the linkage
• Basic hand tools for assembly and adjustment