This standard specifies the general characteristics, performance and key dimensions required for interchange and cooperation with other parts for D-shaped and bow-shaped forged shackles of strength classes 4, 6, and 8. This standard applies to D-shaped and bow-shaped forged shackles with an ultimate working load of 0.32t-100t.
GB/T 25854-2010 Referenced Document
GB/T 13304.1 Steels classification.Part 1:Classification of according to chemical composition
GB/T 193 General purpose metric screw threads--General plan
GB/T 197-2003 General purpose metric screw threads--Tolerances