Hex head bolts DIN 931/933 12.9 10.9 8.8 d≤16 d≥16 HRC39-44 HRC32-39 HRC 22-32 HRC 23-34 Alloy SteelCarbon Steel ASME B18.2.1-1996 Grade 8 Grade 5 HRC39-44 HRC22-34 Alloy Steel Carbon Steel

Thin internal hex screws DIN7984-1985 12.9 10.9 8.8 HRC39-44 HRC32-39 HRC23-34 Alloy steel Alloy steel Carbon steel Black Oxide

Hex socket head cap screws BS 2470-1973 HRC38-44 Alloy Steel JIS B0210 Class2 Black Oxide

Hex socket set screws DIN913 DIN914-1980 DIN915 DIN916-1980 Alloy Steel Black Oxide

countersunk hex screws DIN7991-1986 Alloy Steel 12.9 10.9 HRC39-44 HRC32-39

Metric socket head cap screws ISO7380-1997 Alloy Steel 12.9 10.9 HRC39-44 HRC32-39 Black Oxide

socket head cap screw with washer HRC 39-44 HRC 32-39 GB 9074.26-88 GB/T97.4-2002 Black Oxide

Hex socket head cap screws DIN912-1983 ASME B18.3-1998 BS 2470-1973