Case Hydraulic Quick Couplers

Case Machines and Their Hydraulic Quick Couplings

Case (Case IH agriculture and Case Construction) builds tractors, combines, skid steers, compact track loaders and excavators. Case IH tractor rear outlets use ISO 5675; Case Construction skid steers and excavators use flat-face (ISO 16028 style) on auxiliary lines; older machines may carry ISO 7241 ball-lock couplings.

Coupling Profiles You Will Find on Case Equipment

The table below summarises the quick-coupling profiles most commonly used across Case machine families. It is a field guide, not a guarantee: verify the profile on your specific machine before ordering.

Machine family	Common profile	Typical sizes	Typical threads
Tractor rear outlets	ISO 5675 (agricultural)	1/2" ISO 5675	BSPP / NPT
Skid steer / CTL auxiliaries	Flat-face (ISO 16028 style)	1/2" flat face	NPT / ORFS
Excavator / older lines	Ball-lock ISO 7241 where fitted	1/2" - 3/4"	NPT / BSPP

Selection Notes for Case Fleets

Case IH tractor outlets are ISO 5675 — match with agricultural-profile couplings and seals.
Case skid steer and CTL loader auxiliaries use flat-face; keep the profile on replacements.
Check the thread per market: North American machines favour NPT/ORFS; export machines vary.

Replacement and Service Guidance

Provide the machine model and the coupling face type (flat-face vs ball-lock) for Case machines. Case IH implements may specify ISO 5675 outlet size and thread — confirm both ends.

FAQ

Do Case IH tractors use ISO 5675?

Yes — Case IH tractor rear outlets use ISO 5675 agricultural couplings.

What do Case skid steers use?

Case skid steers and CTLs use flat-face (ISO 16028 style) couplings on auxiliary hydraulic lines.

Are Case and New Holland couplings the same?

Both are CNH brands and both follow industry standards (ISO 5675, ISO 16028). Profiles are standard; always verify per machine model.