{"id":1319,"date":"2025-11-26T15:48:11","date_gmt":"2025-11-26T07:48:11","guid":{"rendered":"https:\/\/whfastener.com\/?post_type=product&p=1319"},"modified":"2025-12-31T17:40:40","modified_gmt":"2025-12-31T09:40:40","slug":"lock-nut","status":"publish","type":"product","link":"https:\/\/whfastener.com\/ru\/product\/lock-nut","title":{"rendered":"\u0421\u0442\u043e\u043f\u043e\u0440\u043d\u0430\u044f \u0433\u0430\u0439\u043a\u0430"},"content":{"rendered":"

Product Overview<\/strong><\/h2>\n

A Lock Nut is a specialized fastener designed to resist self-loosening under vibration, dynamic loads, and thermal cycling. Unlike standard nuts, it incorporates a unique locking feature that increases the friction between its threads and those of the mating bolt, maintaining clamp force and preventing unintended rotation. This critical component ensures the long-term integrity and safety of bolted assemblies in demanding environments.<\/p>\n

Locking Mechanisms & Product Types<\/strong><\/h2>\n

Lock nuts are categorized by their method of achieving a prevailing torque.<\/p>\n

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Type<\/th>\nCommon Name<\/th>\nLocking Mechanism & Features<\/th>\nIdeal Applications<\/th>\n<\/tr>\n<\/thead>\n
Nylon Insert<\/strong><\/td>\nNylon Lock Nut (e.g., DIN 985, ISO 7040)<\/td>\nA non-metallic (nylon) ring deforms elastically against the bolt threads, creating a reusable friction lock. Temperature limited by nylon.<\/td>\nElectronics, automotive interiors, general machinery, appliances.<\/td>\n<\/tr>\n
Prevailing Torque (All-Metal)<\/strong><\/td>\nStover Nut, Center-Lock Nut<\/td>\nDistorted threads or a conical top section creates an interference fit with the bolt. Reusable, higher temperature rating.<\/td>\nHeavy equipment, engines, high-temperature assemblies.<\/td>\n<\/tr>\n
Two-Piece \/ Jam Nuts<\/strong><\/td>\n\u2013<\/td>\nUses two standard nuts tightened against each other (jam nut method). A traditional, low-cost solution.<\/td>\nLow-speed adjustments, static\/low-vibration setups.<\/td>\n<\/tr>\n
Serrated Flange<\/strong><\/td>\nSerrated Lock Nut<\/td>\nIntegrated flange with serrated teeth that bite into the mating surface, preventing rotation.<\/td>\nSheet metal, soft materials, where a washer face is needed.<\/td>\n<\/tr>\n
Chemical Adhesive<\/strong><\/td>\nPrevailing Torque Nut with Adhesive<\/td>\nMicro-encapsulated adhesive on threads cures after assembly. One-time use, high locking strength.<\/td>\nPermanent or tamper-proof assemblies.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Key Features & Benefits<\/strong><\/h2>\n
    \n
  • \n

    Vibration Resistance:<\/strong>\u00a0Primary function is to prevent loosening caused by dynamic forces (Junker vibration test).<\/p>\n<\/li>\n

  • \n

    Maintained Preload:<\/strong>\u00a0Ensures the designed clamp force is retained over the service life of the joint.<\/p>\n<\/li>\n

  • \n

    Reusability (Most Types):<\/strong>\u00a0Many designs (nylon insert, all-metal) can be reused several times without significant loss of locking torque.<\/p>\n<\/li>\n

  • \n

    Eliminates Need for External Locking Devices:<\/strong>\u00a0Replaces lock washers, cotter pins, or safety wire in many applications, simplifying assembly.<\/p>\n<\/li>\n

  • \n

    Temperature & Chemical Compatibility:<\/strong>\u00a0Available in materials and designs suitable for extreme temperatures and corrosive environments.<\/p>\n<\/li>\n<\/ul>\n

    Material Specifications & Grades<\/strong><\/h2>\n
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    Material Standard<\/th>\nGrade \/ Class<\/th>\nTypical Hardness<\/th>\nCharacteristics<\/th>\n<\/tr>\n<\/thead>\n
    \u0423\u0433\u043b\u0435\u0440\u043e\u0434\u0438\u0441\u0442\u0430\u044f \u0441\u0442\u0430\u043b\u044c<\/strong><\/td>\nGrade 5 \/ 8 \/ 10<\/td>\nHRC 22-32 (Heat Treated)<\/td>\nGeneral purpose. Grade 8 and 10 are quenched & tempered for high-strength applications.<\/td>\n<\/tr>\n
    Stainless Steel<\/strong><\/td>\nA2-70 \/ A4-80 (ISO 3506-1)<\/td>\n\u2013<\/td>\nAISI 304 (A2) & 316 (A4). For corrosion resistance. Locking feature must be compatible with galling tendency.<\/td>\n<\/tr>\n
    Brass<\/strong><\/td>\n\u2013<\/td>\n\u2013<\/td>\nGood corrosion resistance, non-magnetic, conductive. Often used in plumbing and electrical.<\/td>\n<\/tr>\n
    Aluminum<\/strong><\/td>\n6061-T6<\/td>\n\u2013<\/td>\nLightweight, corrosion-resistant. For weight-sensitive applications like aerospace.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Standard Series & Specifications<\/strong><\/h2>\n

    Our lock nuts conform to the dimensional and performance requirements of major international standards.<\/p>\n

      \n
    • \n

      Nylon Insert Lock Nuts:<\/strong>\u00a0ISO 7040<\/strong>\u00a0(Prevailing Torque Type),\u00a0DIN 985<\/strong>,\u00a0ASME B18.16.3M<\/strong>.<\/p>\n<\/li>\n

    • \n

      All-Metal Prevailing Torque Nuts:<\/strong>\u00a0ISO 7042<\/strong>\u00a0(Prevailing Torque, Hexagon),\u00a0DIN 6927<\/strong>\u00a0(Flange with non-serrated bearing surface).<\/p>\n<\/li>\n

    • \n

      High-Temperature \/ High-Strength Lock Nuts:<\/strong>\u00a0MS21042<\/strong>\u00a0(Aerospace), proprietary grades for automotive and heavy industry.<\/p>\n<\/li>\n

    • \n

      \u0414\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u0432:<\/strong>\u00a0Metric:<\/strong>\u00a0M3 to M36.\u00a0Imperial:<\/strong>\u00a0#4 to 1-1\/2″.<\/p>\n<\/li>\n<\/ul>\n

      Available Surface Finishes<\/strong><\/h2>\n

      The finish must be compatible with the locking mechanism to ensure consistent performance.<\/p>\n

      \n
      \n
      <\/div>\n
      <\/div>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n
      Finish Type<\/th>\nSpecification \/ Process<\/th>\nNote on Use with Lock Nuts<\/th>\n<\/tr>\n<\/thead>\n
      Zinc Plated (Trivalent\/Blue\/Yellow)<\/strong><\/td>\nASTM B633<\/td>\nMost common. Trivalent chromate is RoHS compliant. Coating thickness must be controlled to not impair locking feature.<\/td>\n<\/tr>\n
      Hot-Dip Galvanized (HDG)<\/strong><\/td>\nASTM A153<\/td>\nFor severe outdoor exposure. The thick coating may require oversize tapping or special design consideration.<\/td>\n<\/tr>\n
      Zinc-Nickel Alloy Plating<\/strong><\/td>\n\u2013<\/td>\nExcellent corrosion resistance for automotive. Provides consistent locking performance.<\/td>\n<\/tr>\n
      Geomet\u00ae \/ Zinc-Flake Coating<\/strong><\/td>\nProprietary (e.g., Delta Protekt)<\/td>\nPremium Option.<\/strong>\u00a0Superior corrosion resistance, controlled friction coefficient, ideal for critical assemblies.<\/td>\n<\/tr>\n
      Passivation<\/strong>\u00a0(Stainless Steel)<\/td>\nASTM A967<\/td>\nStandard for stainless steel nuts to maximize corrosion resistance.<\/td>\n<\/tr>\n
      Black Oxide<\/strong><\/td>\nMIL-DTL-13924<\/td>\nMild corrosion protection, reduces glare. May be waxed or oiled.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

      Selection & Application Guidelines<\/strong><\/h2>\n
        \n
      • \n

        Determine the Loosening Force:<\/strong>\u00a0Assess the level of vibration, shock, or thermal cycling in the application.<\/p>\n<\/li>\n

      • \n

        Consider Service Environment:<\/strong>\u00a0Temperature, exposure to chemicals, or outdoor weather will dictate material and finish.<\/p>\n<\/li>\n

      • \n

        Reusability Requirement:<\/strong>\u00a0Specify if the joint needs to be disassembled and reassembled multiple times.<\/p>\n<\/li>\n

      • \n

        Assembly Torque:<\/strong>\u00a0Lock nuts often have a higher installation torque due to the prevailing torque. Follow manufacturer’s recommended torque values, which include the locking feature’s contribution.<\/p>\n<\/li>\n

      • \n

        Avoid Double Stacking:<\/strong>\u00a0Do not use two lock nuts on the same bolt, as this can compromise performance.<\/p>\n<\/li>\n<\/ul>\n

        Manufacturing & Quality Assurance<\/strong><\/h2>\n
          \n
        • \n

          Process Control:<\/strong>\u00a0Lock nuts require precise control over the feature creating the prevailing torque (nylon insert placement, thread deformation, etc.).<\/p>\n<\/li>\n

        • \n

          Performance Testing:<\/strong>\u00a0Batch testing for\u00a0Prevailing Torque<\/strong>\u00a0per\u00a0ISO 2320<\/strong>\u00a0(for prevailing torque nuts) is critical to ensure consistent locking force.<\/p>\n<\/li>\n

        • \n

          Material Certification:<\/strong>\u00a0Full traceability from raw material to finished product, with Mill Test Certificates (MTCs) available.<\/p>\n<\/li>\n

        • \n

          Quality System:<\/strong>\u00a0Manufactured under a certified\u00a0ISO 9001:2015<\/strong>\u00a0and often\u00a0IATF 16949<\/strong>\u00a0(automotive) quality management system.<\/p>\n<\/li>\n<\/ul>\n

          Our lock nuts are engineered and produced by\u00a0\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Hebei Wohe Fastener Manufacturing Co., Ltd.<\/strong>, leveraging specialized manufacturing techniques for both nylon insert and all-metal prevailing torque designs. Our facility includes dedicated production lines with in-process monitoring to ensure every nut meets the specified locking performance. We supply to industries where joint reliability is non-negotiable, including automotive, off-highway equipment, and industrial machinery.<\/p>\n

          \n

          Technical Support:<\/strong>\u00a0We provide technical data sheets with prevailing torque specifications and installation guidelines.
          \nCustomization:<\/strong>\u00a0Available in special sizes, proprietary locking features, and customer-specific packaging.
          \nMOQ:<\/strong>\u00a0Standard items start from 5,000 pieces per size\/type. Custom orders are negotiable.
          \nLead Time:<\/strong>\u00a0Standard specifications: 20-25 working days.<\/p>\n

          \n

          *Disclaimer: The effectiveness of a lock nut is system-dependent. Factors such as bolt grade, mating surface hardness, and correct installation torque are crucial. For safety-critical applications, physical testing of the complete joint under simulated service conditions is strongly recommended. Specifications are subject to change without notice.<\/p>","protected":false},"featured_media":1324,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"tags":[],"products":[42],"class_list":["post-1319","product","type-product","status-publish","has-post-thumbnail","hentry","products-nut-series"],"acf":[],"yoast_head":"\nLock Nut - Fastener Manufacturer - Screw and Nut Production - Furniture Hardware - Custom Special Components - Hardware Screw Blister Packaging - Screw Assortment Kits.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/whfastener.com\/ru\/product\/lock-nut\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lock Nut - Fastener Manufacturer - Screw and Nut Production - Furniture Hardware - Custom Special Components - Hardware Screw Blister Packaging - Screw Assortment Kits.\" \/>\n<meta property=\"og:description\" content=\"Product Overview A Lock Nut is a specialized fastener designed to resist self-loosening under vibration, dynamic loads, and thermal cycling. 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