- Provides Clamping Force for Our Prism Mounts and V-Clamps
- Stackable M4 Threads on Top and Bottom of Post
- Unpackaged Weight: 20.9 g
Thorlabs' PM4/M clamping arms feature a cap screw-activated flexure mechanism to secure the clamping arm to the post, while a nylon-tipped setscrew secures the optic. A Ø2.3 mm hole located near the top of the post allows for its initial tightening with a 2 mm balldriver or hex key. Both screws feature a 2 mm socket. The PM4/M arm offers 40.9 mm of vertical travel.