BoltShield by Tornilastra is world's leader in the manufacture and supply of BoltShield® metal protection caps for bolts and nuts. BoltShield® caps are screw-on metal caps designed to protect bolts and nuts from thread damage, and to considerably help prevent corrosion (together with a proper paste / corrosion inhibitor). By using BoltShield® caps you will extend the life of bolts and nuts and make maintenance and repair procedures easier and faster. This will help to reduce expensive plant downtimes, thus saving money and time. BoltShield® caps are used in refineries and oil rigs, petrochemical plants, LNG plants, power plants, wind turbines, offshore platforms, steel structures. BoltShield® are commonly installed on pipelines, heat exchangers, reactors and equipment operating at temperatures up to 550° C and over, where common plastic caps would melt. You can find BoltShield® caps to protect bolts and nuts on pipeline flanges, valves, traffic sign posts, bridges, wind turbines and several other applications where bolts and nuts need to be protected. BoltShield® metal protection caps have a special thread, named Screw-On System, that ensures a strong and secure fastening. BoltShield® are designed to be installed manually; no extra tools are required, and they can be easily installed and removed when needed. We offer two types of BoltShield® caps with different levels of protection. Both types of caps are available made of ALUMINIUM, STAINLESS STEEL (304/316), CARBON STEEL, ZINC ELECTROPLATED CARBON STEEL for bolt sizes ranging from ½” to 6”, M12 to M100. COATINGS and CUSTOM-MADE CAPS ARE ALSO AVAILABLE.