NL Industries, Inc. is a holding company. The Company operates in the component products industry through its subsidiary, CompX International Inc. (CompX). CompX manufactures engineered components that are sold to a variety of industries. Through its Security Products operations, CompX manufactures mechanical and electronic cabinet locks and other locking mechanisms used in postal, recreational transportation, office and institutional furniture, cabinetry, tool storage and healthcare applications. CompX also manufactures wake enhancement systems, stainless steel exhaust systems, gauges, throttle controls, trim tabs and related hardware and accessories for the recreational marine and other industries through its Marine Components operations. It also operates in the chemicals industry through its noncontrolling interest in Kronos Worldwide, Inc. (Kronos). Kronos is a global producer and marketer of value-added titanium dioxide pigments (TiO2), a base industrial product.