1/2" NPT male pipe threads. This is a flush mount button that gets pressed to release pressure from line, vessel, etc.
W493 -12 AN -12 90° Push-On Hose End fittings Push Lock Aluminum Black 3/4” Hose
Black 12 AN -12 90° Push-On Hose End fittings Push Lock Black Aluminum
TCI 387600 Micro Push Button Switch Only Perfect for Line Lock or Trans Brake
QuickCar Ignition Control Panel Starter Black 1 Toggle/ 1 Push Button Start USRA
QuickCar Ignition Control Panel Black 3 Toggles/ 1 Push Button/ 3 Lights
QuickCar Fused Ignition Control Panel Black 6 Toggles/ 1 Push Button/ 6 Lights