Dubro 4-40 x 5/8 Swivel Ball Links
High-quality ball links with burnished, nickel-plated brass swivel balls for smooth and reliable operation.
Each assembly includes a socket head cap screw, brass shim, and hex nut.
| Specification | Detail |
|---|---|
| Thread Type | 4-40 x 5/8 |
| Material | Brass swivel ball, brass shim |
| Finish | Nickel plated |
| Weight | 2 grams per assembly |
| Package Quantity | 2 pieces |
FAQ
What is the thread size and length of the ball links?
The ball links have a 4-40 thread with a 5/8 inch length.
Are the swivel balls made of brass?
Yes, the swivel balls are made of brass and are nickel plated for durability and corrosion resistance.
What hardware is included in each assembly?
Each assembly includes a socket head cap screw, brass shim, and hex nut.


Pippa Hughes –
These ball links fit perfectly with my 4-40 rods. The swivel action is smooth and the nickel plating holds up well in outdoor conditions. The included hardware is solid and easy to assemble.
Jan Martin –
Good quality and reliable performance. The brass construction feels sturdy and the swivel ball moves without sticking. Slightly heavier than expected, but that’s expected for brass components.
Gavin Coleman –
Installed them on my fishing setup and they work seamlessly. The cap screw and hex nut are well-made and the shim helps with alignment. No issues so far.