Set Of Four Different Items Required For Maintenance Of Smgr Mesh & Duct Connections In Ac Electric Locomotives As Follows. 1) Set Of Hex Head Bolt Full Threaded Size: M8 X 25mm, Pitch: 1.25mm, Grade: 8.8 As Per Is: 1364(part 2) Along With Suitable One M8 Nut, Grade: 8.0 As Per Is: 1364(part 3), Two Flat Washers As Per Is: 2016 And One Spring Washer As Per Is: 3063. Qty/Set. = 03 Sets. 2) Set Of Hex Head Bolt Full Threaded Size: M8 X 30mm, Pitch: 1.25mm, Grade: 8.8 As Per Is: 1364(part