Set Of Fasteners For Air Spring Assembly Consisting Of (1) High Tensile Hexagonal Socket Head Cap Screw To Size M 20 X 55 Long, As Per Is: 2269,Prop. Class 10.9, Qty/Set= 01 No. (2) Prevailing Torque T Ype Nut (With Non-Metallic Insert), Size M20: B, As Per Is: 7002, Prop. Class 10, Qty/Set= 01 No. (3) Hardene D & Tempered Punch Washer To Size A22, With 300 Hv Class (300 Hv To 370 Hv) Hardness As Per Is: 2016, Qty/Set=01 No. The Surface Should Be Zinc Electroplated To A3L Finish Of Is: 1367 (Part-11). [ Warranty Period: 30 Months After The Date Of Delivery ] ]