CEL male nipple fitting – L- light version of the metric thread nipple, CEL nipple
Connection: W-shape hole, 24° DIN 3861, additionaly as an opption: Y-shape hole, 60° DIN 3863
Counter connection: Sealing head with backed sleeve nut, light row (L)
This are popular metric thread fittings, sometimes it has O-ring seal on the nut (NBR, viton, EPDM on request) then it is called as DKOL female fitting, it is avaliable as CEL male fitting made of stainless steel or carbon steel.
stainless steel metric thread nipple