... BS 970:Part 1:S304 Stainless Steel5.Flange Connecting Bolts for AdaptersHexagon bolts,with Nuts and two washersBolts-to ... mm)Connection Bolts Type 80mmDuctile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC88.1-102.4M16*603" ... 0-289.0M24*8010"300mmDuctile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC322.9-339.4M24*80Flanged ... ,Nuts,and Gasket. ductile iron flanged ends adapter with stainless steel bolt