ASTM F3148 Specification Published for TNA®

Beginning September 25th, 2015 ASTM International officially recognized the TNA Fastening System with it's own specification;  ASTM F3148-15 Standard Specification for High Strength Structural Bolt Assemblies, Steel and Alloy Steel, 144ksi Minimum Tensile Strength, Inch Dimensions. For us, this is a pinnacle moment in the development process.  No longer is TNA just a great idea.  [...]