This hardware kit is a fast and easy solution for creating custom linkage assemblies from 3" to 13.5" long (hole to hole). These are perfect for building animated projects using various types of electrical motors. Simply cut the included threaded rod to the desired length and assemble. The rod ends provide 3/4" of additional adjustment so you can get the exact length you need.
This kit includes:
(1) 1/4 x 20 x 12" zinc plated steel threaded rod
(2) 1/4 x 20 zinc plated steel hex nuts
(2) 1/4 x 20 x 1.5" female threaded steel rod ends (with 1/4" cross hole)
Tips to prevent binding:
1) properly align linkages.
2) use flat washers between rod ends and their mounting points.
3) use nylon insert lock nuts to secure linkage.
4) lubricate all moving parts upon final assembly.