Fasteners for the oil and gas industry Item 1 – QTY 3000 7/16"-20UNF x 38mm ASTM A193 B8M Class 2 Partially Threaded Hex Head Bolt as per ASME B18.2.1 - Plain finish Item 2: QTY 3000 7/16"-20UNF x 58mm ASTM A193 B8M Class 2 Partially Threaded Hex Head Bolt as per ASME B18.2.1 - Plain finish If it helps improve lead time, client can accept galvanised and xylan/PTFE coated carbon steel A193-B7 & A193-B7M alternatives The following have also been recommended by our materials engineer: A320-L7, A320-L43 and A320-L7M