ASME/ANSI B18.2.6-2006
Twist-off type tension control structural bolts with heavy hex head
EN 14399-10-2009
Twist-off type tension control structural bolts with heavy hex head
EN 14399-10-2018
Twist-off type tension control structural bolts with heavy hex head
GB/T 32076.9-2017
Twist-off type tension control structural bolts with heavy hex head