Malin Brand Safety Lock Wire
Since 1884, Malin Company has produced high-quality industrial wire including safety lockwire for use in the aerospace industry. Make safety wire size identification easier with BAC exclusive safety wire I.D. bands, sold individually or in a set of 4. Malin lock wire is available in one pound spools in stainless steel, copper, brass and inconel.
Safety wire is a critical locking device used throughout aircraft to prevent fasteners from loosening due to vibration, temperature changes, and operational stresses. While all safety wire serves the same basic purpose, the material selected depends on the environment and application. Stainless steel safety wire is the industry standard for most aviation maintenance because it offers an excellent balance of strength, corrosion resistance, and durability, making it ideal for securing bolts, nuts, turnbuckles, filters, and other critical hardware. Inconel® safety wire is designed for extreme heat applications, retaining its strength at temperatures where stainless steel begins to lose its mechanical properties. It is commonly specified for jet engines, exhaust systems, turbine sections, and other high-temperature areas. Copper safety wire is softer and more malleable than stainless steel and is primarily used as a tamper-evident seal or indicator wire rather than for securing flight-critical fasteners. It is often found on fire extinguishers, calibration equipment, and components requiring visual evidence of unauthorized removal. Brass safety wire offers excellent corrosion resistance and electrical conductivity while remaining non-sparking, making it suitable for specialized industrial applications and certain non-critical aircraft maintenance tasks where a softer, easily formed wire is preferred. Selecting the proper safety wire material helps ensure compliance with maintenance specifications while providing reliable fastener retention in the operating environment.