• M6 threads at the bottom, M4 threads on the top
• Available length includes 25 mm, 38 mm, 50 mm, 75 mm, and 100 mm
• Each threaded hole is provided with two Ø2 mm alignment holes for precision mounting
• There is an alignment hole 20 mm away from the M6 thread side at the bottom, which allows connection with coaxial posts.

     The PSN1E series of high-stable stainless steel posts is made of 316L stainless steel with low coefficient of thermal expansion, which leads to higher system stability. Each post is designed with M4 threads on the top and M6 threads at the bottom. Mounting holes on the two ends of the post are provided with two Ø2 mm alignment holes to position optical element posts. There is an alignment hole 20 mm away from the M6 thread side at the bottom. Combined with the PS1Z series Ø6 mm posts for coaxial systems, this alignment hole can be used to align multiple mounts along a common optical axis, or for fine angular adjustment. The alignment hole on the PSN1E25 post is a blind hole, because the through hole will interfere with the mounting thread and lead to insecure connection.