Tenders for Supply of High Tensile Hexagonal Socket-Head Cap Screw M20x55 Long For Fitment Of Air Spring A Ssy. In Lhb Coaches, Confirming To Specification No. Is: 2269 Latest, Class 10.9. All Fasteners Shall Be Zinc Electropl Ated To A3l Finish Of Is:1367 Part-11 Warranty Period: 30 Months After The Date Of Delivery