Types of thread size on reusable hose fittings is different, it is up to customer’s require, no the same standard. It is normal fine thread, there are two main types: UNF thread and Metric fine thread. Eaton company often use UNF fine, also popular in USA. European often use metric fine thread and also UNF thread, but central lubrication system hose and fittings use metric thread.
UNF 9/16-18 fine thread for 3/8” hydraulic hose SAE100R2AT, UNF 5/8-18 fine thread for 1/2” hose. The screw ferrule will match with hose ends:
M7x0.75 and M9x1 thread used in central lubrication system hose fittings and screw ferrule as picture:
UNF and Metric size chart on reusable hose fittings ends
Assembly of reusable hose fittings without specification, it is up to manufacturer design:
If you have any questions, please feel free to contact us firstname.lastname@example.org