Set Of 03 Washers Consisting Of (I) Spherical Washer, For M20 Bolt As Per Is 4297:1996 And Material E250 As Per Is 2062:2011 Qty-01 No./Set. (Ii) Plain Washer (Machined) For M20 Bolt As Per Is 2016:1967 And Material E250, As Per Is 2062:2011 Qty-01 No./Set. (Iii) Spring Washer For M20 Bolt, As Per Is 3063:1994, Type B, Right Hand And Material Spring Steel Qty-01 No./Set . Note: All Items To Be Galvanized.