Tattoo Machine Parts

The rear binding post is one of the locations where the clip cord connects to the machine. The Rear Binding Post is M4 Metric with a length of 13mm for the brass section only. The brass end measures 8.5mm thick and 9mm at the base. There is one hole for attaching the clip cord, located on the side. The diameter for the screw hole is 4mm. The thread length, or distance of each thread, is 0.75mm. 

Specifications:

Size of brass section: 13mm long, 8.5mm thick at the end, 9mm thick at base
Material: brass
M4 Metric