Our Sync mount screws are CNC machined in the USA from 4140 Heat Treated CroMoly steel, and finished in corrosion resistant Flash Nitride.
Each C-screw has a Nylok® Torq-Patch® applied to the threads. Nylok® Torq-Patch® is a self-locking nylon permanently bonded onto the threads that resists vibration loosening. Since nylon has great memory characteristics, this locking element can be reused several times.
Sync screws are sold in pairs and are designed and made specifically to fit precisely in our Sync integral optic mounts.