NL Industries, Inc. is a holding company. The Company operates in the component products industry through its majority-owned subsidiary, CompX International Inc (CompX). The Company operates in the chemicals industry through its non-controlling interest in Kronos Worldwide, Inc (Kronos). CompX is a manufacturer of engineered components utilized in a variety of applications and industries. Through its Security Products operations, CompX 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. CompX also manufactures stainless steel exhaust systems, gauges and throttle controls for the recreational marine and other industries through its Marine Components operations. Kronos is a producer and marketer of value-added titanium dioxide pigments (TiO2).