This standard specifies the structure and dimensions of ordinary long thread 90° countersunk head large interference bolts (hereinafter referred to as bolts). This standard is applicable to mechanical connections in areas with fatigue and sealing requirements.
HB 20068-2011 Referenced Document
GB/T 192-2003 General purpose metric screw threads--Basic profile
GB/T 193-2003 General purpose metric screw threads--General plan
GB/T 196-2003 General purpose metric screw threads--Basic dimensions
GB/T 197-2003 General purpose metric screw threads--Tolerances
GJB 1951 Specification for high quality structural steel rods for aerospace use