NL Industries, Inc. is a manufacturer of engineered components utilized in a variety of applications and industries. It operates in the component products industry through its subsidiary CompX International Inc. It also operates in the chemicals industry through its non-controlling interest in Kronos Worldwide, Inc. (Kronos). The Company through its security products operations, manufactures mechanical and electronic cabinet locks and other locking mechanisms used in recreational transportation, postal, office and institutional furniture, cabinetry, tool storage and healthcare applications. It also manufactures stainless steel exhaust systems, gauges, throttle controls, wake enhancement systems, trim tabs and related hardware and accessories for the recreational marine and other industries through its Marine Components operations. Its products include National Cabinet Loc, Fort Lock, Lockview and RegulatoR. Its marine components products include Custom Marine and Livorsi Marine.