Cam and grove fittings. Cam and groove fittings and gaskets are hose couplings that connect or disconnect pipe, tubing, or hose without tools. Cam and groove fittings, also known as camlock couplings, consist of a grooved male adapter and a female cam with handles or arms. Camlock fittings for chemical are typically stainless steel but other types of material are used depending on the chemical properties and application.