Brass Metric Drain Plug with collar is widely used for plugging specific holes with straight, cylindrical or parallel threads. The plug is precisely designed to induce a tighter seal with greater tightening torque value for covering threaded holes. Apart from this, the brass plug is usually used to seal holes in fittings, pipes or machinery in order to stop the leakage of steam, air, water, gasses or fluids under pressure. It is also a great mechanical plug that blocks the intake manifold water ports. The brass metric drain plug includes tapers under the flange for seating the sealing washers that are installed for smooth functioning. Since the plug is made of high quality brass, it is anti-corrosive in nature and can be used in wet environment as well.