M6 Cable Penetrator for 4-5mm Cable


This is the penetrator used on the Lumen Subsea Lights, Ping and Newton Gripper. M6 thread. Comes with O-ring, but not with a nut.

In stock


Product Description

This cable penetrator is a simple solution to waterproofing your robot. It’s basically a bolt with a hole that the thruster cable can be glued (potted) into to provide a waterproof connection through watertight enclosures, boxes, panels, etc. This penetrator was designed for an M6 threaded hole and the device side of the Lumen Light, Newton Subsea Gripper and Ping Echosounder. There is no corresponding nut available. We primarily recommend the WetLink Thixotropic Potting Compound, which can be applied in one step and provides a depth rating up to 300 meters. Alternatively, we recommend Loctite Marine Epoxy and the Potting Kit to complete assembly.


  • Anodized aluminum construction for corrosion resistance and high strength.
  • Captive O-ring face seal that works on any smooth surface.
  • Wrench flats for easy tightening.
  • Works for cables smaller than 4mm as well.


  • 1 x M6 Cable Penetrator Bolt (for 4mm cable)
  • 1 x 010 O-Ring


Recommended Tapped-Hole Diameter6 mm
Bolt ThreadingM6 x 1.0
Bolt Length6.5 mm 0.25 in
Bolt Head Diameter12 mm 0.47 in
Wrench Flats12 mm 0.47 in
O-ringNBR70 AS568-010

3D Models


Revision History

17 May 2019

  • R3 – Initial release


Cable Penetrator Potting Instructions

Lumen Light Daisy Chain Connection


Blue Robotics Forums – Potting

Blue Robotics Forum – Lights