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A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut, stiff nut or elastic stop nut, is a nut that resists loosening under vibrations and torque. Elastic stop nuts and prevailing torque nuts are of the particular type where some portion of the nut deforms elastically to provide a locking action, which have many different applications in the automotive, commercial vehicle markets: chassis, body & interiors, brakes and safety solutions, engine, power train and driveline systems.

JingFong has focused on the development and manufacture of prevailing torque type lock nuts over 40years, in which Self-Locking Function, obtainable through nylon and plastic inserts, glues pre-applied inside threads (patches), steel plastic deformation (metal prevailing-torque effect), conical and special washers.

All these solutions are also combinable with washers or caps, to preserve counterparts surfaces, plastic clips and metal cages, to improve the assembly line automation and joints tolerances recovering.

JingFong’s developing products can be organized into three major product categories serving a broad spectrum of markets, including Nylon Inserted Lock Nut, All metal Lock nuts, and Special nuts.

  • Nylon Inserted Lock Nuts Nylon Inserted Lock Nuts

    A design feature of the lock nut produces friction between threads of mated components thereby increasing the force needed to tighten as well as loosen the nut. Jingfong’s three main categories of prevailing torque type nuts include: all metal, nylon insert lock nuts, and Nylon Patch nuts.

    Prevailing Torque Lock Nuts
  • Nylon Inserted Lock Nuts Nylon Inserted Lock Nuts

    Jingfong produces all kinds of Engineered Standard Fasteners (Din, JIS, ANSi/ASME,IFI, ISO, SAE, ASTM, Mil, BA, UNI…)/Fittings/ Formed parts, and OEM Fasteners with extensive experience in the field. Customers definitely can find right fastening solution from JINGFONG.

    Standard Nuts
  • Nylon Inserted Lock Nuts Nylon Inserted Lock Nuts

    Special pattern nuts are not your standard finish hex or jam nuts. Special patterns are required to fit a mating thread from a screw or bolt with unusual space constraints. We are specialized in producing special nuts according to customers’ drawing. For all specification, we could make cross reference to make sure all requirement mentioned in drawing can be met.

    Special Nuts