※ ※ Material: 304 stainless steel

※ ※ Name: Universal hook/rotating ring/chain buckle/universal spring buckle/dog link head
※ ※ Standard: GB
※ ※ Surface treatment: none
※ ※ Size: M4 M5 M6 M7
※ 304 stainless steel has excellent corrosion resistance and good chemical resistance, with micro-magnetic or non-magnetic.
※Tensile strength: 700mpa/mm² (thread diameter ≤24mm), performance level 70
※It is stipulated that the non-proportional elongation should be: 450mpa/mm2
※Elongation after breaking: 0.4dmpa/mm²
※ ※ Features: firm fixation, repeated use, damp environment, no rust.