Code of thread: fine-pitch thread – FG, left-handed thread – LH, fine-pitch and left-handed thread-FGLH.
Material and surface treatments:
1) Low carbon steel Q235A; Coated with rust-proof oil, zinc plating or nickel plating.
2) Alternative stainless steel 304, stainless steel 303, stainless steel 316; Surface passivation.
3) Alternative aluminum 6061; Surface cleaning or anodizing finish.
4) Alternative medium carbon steel 45; Coated with rust-proof oil, zinc plating or nickel plating.