This part of GB/T 10051 specifies the type, size and technical requirements of straight handle single hooks. This part applies to the die forging and free forging straight shank single hooks for lifting machinery specified in GB/T 10051.1.
GB/T 10051.5-2010 Referenced Document
GB/T 10051.2 Lifting hooks.Part 2:Technical conditions for forged hooks
GB/T 10051.4-2010 Lifting hooks.Part 4:Blanks of shank hook with point
GB/T 196 General purpose metric screw threads--Basic dimensions