Rockwell hardness
HRC 33-39
Tensile strength
150-173 ksi
Yield strength
Min. 130 ksi
Surface treatment
Black oxide , Hot-dip galvanized
Head Mark
We can mark the customers' abbreviations, such as "T 4" "T8" etc
Certificate
ISO9001;CE,3-1 CERTIFICATES
Appearance
Bright neat body, without any burrs
Quality Control
100% inspection during production