Really Right Stuff has always rejected coin-slotted screws for our products, no matter how convenient they may appear. Sufficient torque to properly fix the screw just can't be generated with a coin. Instead, we've always chosen hex-socket screws to secure our products. Hex keys deliver more than enough torque for the job, are compact, inexpensive, and universally available. RRS HChSs25C125 1/4"-20 x 1.25" mounting screws for the PC-LR or PC-PRO are custom machined.
To purchase the correct size hex key for the HChSs25C125 screw,
click here.