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  2. Locknut - Wikipedia

    en.wikipedia.org/wiki/Locknut

    A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut, [1] stiff nut [1] or elastic stop nut, [2] is a nut that resists loosening under vibrations and torque. Prevailing torque nuts have some portion of the nut that deforms elastically to provide a locking action. [ 2 ]

  3. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    Hexagon nuts with metric coarse and fine pitch thread – Product classes A and B: Withdrawn: DIN EN ISO 4032, DIN EN ISO 8673: ISO 4032, ISO 8673: DIN 935-1: Hexagon slotted nuts and castle nuts with metric coarse and fine pitch thread – Product grades A and B: Active: DIN 935-2: M42 to M160x6 hexagon head nuts; product grade B: Active: DIN ...

  4. Nut (hardware) - Wikipedia

    en.wikipedia.org/wiki/Nut_(hardware)

    In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: lock washers, jam nuts, eccentric double nuts, [1] specialist adhesive thread-locking fluid such as Loctite, safety pins or lockwire in conjunction with castellated nuts, nylon inserts , or slightly oval-shaped threads.

  5. Security locknut - Wikipedia

    en.wikipedia.org/wiki/Security_locknut

    A security locknut [1] is a type of industrial fastener composed of two steel threaded parts: a nut body and an elliptical spring steel lock ring. Security locknuts are fastened onto a mating bolt to form a bolted joint. Forces of friction (with elastic deformation), a stretching of the bolt, and compression hold the bolted joint firmly together.

  6. Lug nut - Wikipedia

    en.wikipedia.org/wiki/Lug_nut

    Additionally, under-tightened lug nuts may come loose with time. The tool size needed for removal and installation depends on the type of lug nut. The three most common hex sizes for lug nuts are 17 mm, 19 mm, and 21 mm, while 22 mm, 23 mm, 11 ⁄ 16 inch (17.5 mm), and 13 ⁄ 16 inch (20.6 mm) are less commonly used.

  7. Jam nut - Wikipedia

    en.wikipedia.org/wiki/Jam_nut

    Standard nut employed as a jam nut against another standard nut. A jam nut is a low profile type of nut, typically half as tall as a standard nut. It is commonly used as a type of locknut, where it is "jammed" up against a standard nut to lock the two in place. It is also used in situations where a standard nut would not fit.

  8. Bolted joint - Wikipedia

    en.wikipedia.org/wiki/Bolted_joint

    Holes are drilled in nuts and bolt heads, and wire is threaded through the holes to prevent back-rotation. This method of locking is labor intensive, but is still used on critical joints. [1] Locknuts Some portion of the nut deforms elastically during tightening to provide a locking action. Spring washers and lock washers

  9. Square thread form - Wikipedia

    en.wikipedia.org/wiki/Square_thread_form

    Square threads are defined as follows by ISO standards: . where Sq designates a square thread, 60 is the nominal diameter in millimeters, and 9 is the pitch in millimeters. When there is no suffix it is a single start thread.

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