Check your eligibility criteria for tender Supply of Set Of Fasteners For Fitment Of Air Spring Assembly In Emu/Demu Coaches. 1. H Igh Tensile Hexagonal Socket-Head Cap Screw M20x50 Long, Confirming To Specification No. Is: 2269 L Atest, Class 10.9. 2. Prevailing Torque Type Hexagon Nut With Non-Metallic Insert M20:B, Con Firming To Specification No. Is:7002 Latest, Class 10. 3. Hardened And Tempered Washer With 300Hv Cla Ss 300Hv -370Hv Hardness. A22 Confirming To Specification No. Is:2016 Latest. Note: Makes For Screw & Nut - Tvs/Unbrako/Dfl/Tuff. All Fasteners Shall Be Zinc Electroplated To A3l Finish Of Is:1367 Part-11 Warran Ty Period: 30 Months After The Date Of Delivery