Our roadside barriers and guardrail components need to be fasteners such as nuts,Website:http://www.cnguardrail.com, bolts, and washers. We supply guardrail plate washers in a variety of sized, including 76*44*4mm, 75*45*5mm and 120*40*5mm. Made of high quality steel, these plate washers go through a hot-dip galvanized process to improve their corrosion resistance. The purpose of a guardrail plate washer is three-fold: to reduce friction between the fastener and the fastened item, to prevent slipping, and to minimize stress.SpecificationsSize: 76*44*4mm, 75*45*5mm and 120*40*5mmMaterial:Q235B, Q345B or stainless steel ect.