- Female thread class IIB
- Steel, stainless steel or aluminum
Code of thread : left -handed thread – LH, E.g . GU- 5-40LH.
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.