Ss Bolt (12X50) Mm Full Thread With Two Plain Washer, One Spring Washer And One Nyloc Nut S Uitable For Fixing Of 9 Kva Transformer. All Bolt To Is:1364 Pt-2 Grade-Ss304, All Plain Washer Is:2016 Grade -Ss304, All Spring Washer To Is:3063 Flat Sec Grade-Ss304, All Nyloc Nut To Is:7002-Ss304. Bolt Shall Be Of Make: Tvs/Unbrako/Dfl/Tuff/Jom/Xpo .Standard Quality Din 933 For Screw, Din 982 For Nylock Nut, Din 12 7 For Spring Washer And Din 125 For Plain Washer. All Items Of Grade A2-70 And Of Above Makes Only. [ Wa Rranty Period: 30 Months After The Date Of Delivery ] ]