Hexagonal Nylock Nut Of Size M16hexagonal Nylock Nut Of Size M16,Prevailing Torque Hexagonal Nylock Nut Of Size M16 As Per Spec No: Iso7040/Is:7002 Tab-1 Grade 8 With Zinc Plated Suitable For 60Kva Transformers Of Lhb Ac Coaches. Acceptable Makes: Tvs, Tuff , Dfl Or Unbrako Only. [ Warranty Period: 30 Months After The Date Of Delivery ] ]