This Part of EN 1677 specifies requirements for forged steel lifting hooks of grade 4 having latch and eye up to 31,5 t WLL, mainly for use in:- chain slings according to EN 818-5- steel wire rope slings according to prEN 13414-1:1998- textile slings according to EN 1492-1, EN 1492-2.intended for lifting objects, materials or goods.This Part of EN 1677 does not apply to hand forged hooks.The hazards covered by this Part of EN 1677 are identified in clause 4.Annex A gives the bases for calculation of hook dimensions.Annex B gives an example of a designation system for hooks of grade 4.