ISO quick coupler size

[PuG]

Afternoon, I'm having a bit of a stupid moment here, whats a standard ISO A size for normal hydraulic quick couplers for tractors? 1/2", 3/4" or 1" male. I measure them out between 20 to 23mm dia depending.

Cheers, James

 

[quattro]

Afternoon, I'm having a bit of a stupid moment here, whats a standard ISO A size for normal hydraulic quick couplers for tractors? 1/2", 3/4" or 1" male. I measure them out between 20 to 23mm dia depending.

Cheers, James

Half inch for normal spool valves

 

[C.J]

1/2" because they most commonly have 1/2" BSP female threads