Screw is a fastener that has a thread wrapped around a cylinder. Some screw threads are designed to match a complementary internal thread formed in a nut or object. A screw is commonly used to hold objects together or to fix an object. We are engaged in manufacture and supply of Monel Screws, which is widely reckoned for durability and quality. Monel Screw Typically used for chemical, electrical and marine fields, heat exchangers, connectors valves and pumps.