Anti-Walk Trigger Pins
The torque spec on the screw is 11 inch-pounds maximum; 8 inch-pounds of torque are recommended.
Pin Diameter: 0.154"
The external width of AR receivers varies in the trigger/hammer pin area, depending on the manufacturer. If the pins are too long for your receiver, you may shorten the pins a small amount by carefully filing material evenly from both ends of the pins. However, this is not required. Longer pins will not affect the function or performance of the rifle.