Locking-Pin Bushings Alignment Pins What is this? Product Information Locking-Pin Bushings Locking-Pin Bushings are equipped with a retainer spring clip on the inside diameter. These bushings are used with all types of locking/captive pins and locating screws. Available for pin diameters 3/16 to 1/2" (6 to 12mm in metric). Choice of standard or long bushing in most sizes, for installation in thinner or thicker plates. Locking-Pin Bushings are designed to press fit in a standard reamed hole, and can be secured with the included Lockscrew to positively hold the bushing in place. Made in USA.