Profile: Pandrol USA LP is a designer of resilient rail fastening systems for all types of track and traffic conditions. Our product line includes fasteners, track support, tie plates, weld-on shoulders, screw spikes, anti-abrasion assembly, tie pads, insulators and rolled plates. Our tie plates are designed to use with 5 9/64", 5 1/2" or 6" base rail. Our hot forged steel screw spikes are available in 15/16" diameter and designed for use with a 13/16" socket. Our insulators provide electrical insulation and protect the ductile iron shoulder from abrasion by direct contact with the rail.