... 898:1:1999 Grade4.NutsTo BS 970:Part 1:S304 Stainless Steel5.Flange Connecting Bolts for AdaptersHexagon bolts,with Nuts ... Type 80mmDuctile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC88.1-102.4M16*603"100mmDuctile Iron, ... -127.8M16*704"150mmDuctile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC158.2-181.6M20* ... -289.0M24*8010"300mmDuctile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC322.9-339.4M24* ...