BULK PACK of (400pcs) 3/16" Lynch Pins. Used on some Hinge Pins (the pins that mount the plow on the truck). These are 3/16" diameter, and they fit the Aftermarket Hinge Pins we sell here. These 3/16" Lynch Pins have many uses on trucks and trailers as well as outdoor power equipment. View all images for technical drawing. View Related for lager quantities up to 500 pieces.