Product includes self-locking nuts and counter nuts designed for professional, practical use. Built with nylon inserts and stainless materials where specified, these fasteners secure assemblies, resist vibration, and are easy to store and distribute. Key benefits - Reliable locking: Nylon-insert, self-locking stop nuts hold preload under vibration and reduce the need for re-torquing. - Corrosion-resistant option: Stainless locking nuts with NF thread provide rust-free performance in damp or corrosive environments. - No extra hardware required: Counter nuts with integrated nylon sleeves eliminate the need for separate spring washers. - Organized storage: Counter nuts come in a plastic container with a preinstalled rim to keep parts clean, separated, and ready for use. - Professional design and workmanship: Robust, sensible structure suited to repeated use in workshop or field conditions. Important attributes - Function: Self-locking (nylon insert) nuts for anti-loosening; counter/lock nuts for locking and securing threaded assemblies. - Thread type: Includes locking nuts with NF thread where specified (stainless option). - Material: Nylon insert / nylon sleeve for locking action; stainless steel for rust-free locking nuts (as indicated). - Shape: Hexagon (hex) counter nuts for standard wrenching and broad contact. - Packaging: Plastic storage container with a rim to keep counter nuts tidy and accessible. - Performance: Stable, practical design intended for professional or DIY applications; reduces need for additional washers. Typical applications - Automotive and mechanical maintenance: Secure suspension, engine accessories, or bracketry that experience vibration. - Industrial machinery and equipment: Fastenings on motors, gearboxes, and assemblies where repeated vibration and corrosion resistance are concerns. - General construction and repair: Use in metal frameworks, fixtures, and where a tidy inventory of frequently used counter nuts speeds assembly. Practical notes - Use the nylon-insert locking nuts where controlled vibration resistance is needed; choose the stainless NF-thread locking nuts for corrosion-prone environments. - Hex counter nuts with nylon sleeves are compatible with standard spanners and eliminate the need for spring washers. - Store counter nuts in the provided plastic container to keep parts organized and to distribute frequently used pieces quickly. This description reflects the product’s original specifications: self-locking stop nuts with nylon insert, counter nuts stored in a plastic container with preinstalled rim, stainless locking nuts with NF thread, and hexagon counter nuts with nylon sleeves.