... railway screw, plastic dowel, rail pad, railway insulator, rail fish bolt, railway base plate, rail anchor, railway shoulder, rail bolt, flat and spring washer ... Diameter 7/8" Nominal Toe Load 2,000 lbs Nominal Rail Seat Clamping Force 4,000 lbs Working Deflection 0.56 ... is only 0.1mm variation of height 5> Vertical Special Rail Clip Material 60Si2MnA Loading Property 2500DaN Hardness HRC51~55 6 ...