The P200-At28 is a kinematic optic mount specifically made for thin 2-in. optics. The mount features a fully threaded design to allow for mounting of lens tubes or other items with 2.035-40 (SM2) threads. It uses two threaded retaining rings to secure optics having a thickness of 9.2 mm or less. The mount has standard features like a 1.5-in. optical axis height, two 80-TPI hex key locking actuators, and an exceptionally thin 38.5-mm nominal profile. The P200-At28 is designed with a center clearance hole for #8 or M4 screws.