- Extension Post Used to Extend the Height of Our RS Series Ø25 mm Pillar Posts
- M6 Tapped Hole on Both Ends
- 5 mm Balldriver Hole Provided for Extra Leverage During Tightening
- Large-Diameter Relief Cut on Top and Bottom for Additional Mounting Stability
This 25 mm long Pillar Post is ideal for enhancing our fixed height riser supports. It contains a M6 tapped hole in both ends for direct mounting to an optical table or standard base and an optical mount, and it is machined from nonmagnetic 303 stainless steel.
An AE4M6M adapter, which has external M6 threading and internal M4 threading, is also included. The adapter can be used with an M4 setscrew to attach many of Thorlabs' metric optomechanical parts to a Ø25 mm imperial pillar post. In principle, the adapter can also be used to connect two Pillar Posts, but a solid M6 setscrew, which is included in our HW-KIT4/M hardware kit, is a more stable choice for this.