{"id":739,"date":"2025-10-29T07:35:59","date_gmt":"2025-10-29T07:35:59","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/star-lock-washer\/"},"modified":"2025-11-02T13:58:40","modified_gmt":"2025-11-02T13:58:40","slug":"star-lock-washer","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/fr\/product\/star-lock-washer\/","title":{"rendered":"Star Lock Washer"},"content":{"rendered":"

Product Details<\/strong><\/h4>\n

The locking mechanism of our star washers is both mechanical and tension-based. As the fastener is tightened, the washer is flattened, and the internal teeth flex like springs, exerting a continuous upward force against the fastener head. Simultaneously, the sharp edges of the teeth dig into the softer material of the fastener and the joint surface, creating a strut-like action that resists counter-rotation.<\/p>\n

We manufacture these washers from high-quality carbon steel, which is then treated with a black oxide finish to provide good corrosion resistance and a durable, non-reflective surface. For applications in more demanding or corrosive environments, stainless steel options are also available.<\/p>\n

Product Parameters<\/strong><\/h4>\n

The following tables outline the technical and dimensional specifications for our Internal Tooth Star Lock Washers.<\/p>\n

General Specifications:<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/strong><\/td>\nStar Lock Washer (Internal Tooth Type)<\/td>\n<\/tr>\n
Material<\/strong><\/td>\nCarbon Steel, Stainless Steel (A2-70, A4-70, etc.)<\/td>\n<\/tr>\n
Finish<\/strong><\/td>\nBlack Oxide Coating, Plain<\/td>\n<\/tr>\n
Size Range<\/strong><\/td>\n1\/16″ to 1″ (Imperial). Metric sizes (e.g., M3, M5, M8) and custom sizes available.<\/td>\n<\/tr>\n
Application<\/strong><\/td>\nHeavy Industry, General Industry, Electronics, Automotive, Appliances<\/td>\n<\/tr>\n
Certificates<\/strong><\/td>\nISO9001, ISO14001, ISO45001, SGS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Dimensional Specifications (Imperial Sizes):<\/strong>
\nThe table below shows a representative sample of available sizes. A full range from 1\/16″ to 1″ is available.<\/em><\/p>\n

\n\n\n\n\n\n\n\n\n\n
Nominal Diameter (d)<\/th>\nOuter Diameter (dc)<\/th>\nThickness (s)<\/th>\nNumber of Teeth<\/th>\n<\/tr>\n<\/thead>\n
1\/8″<\/strong> (3.2 mm)<\/td>\n9.5 – 9.9 mm<\/td>\n0.20 mm<\/td>\n4<\/td>\n<\/tr>\n
1\/4″<\/strong> (6.4 mm)<\/td>\n15.1 – 15.5 mm<\/td>\n0.25 mm<\/td>\n6<\/td>\n<\/tr>\n
1\/2″<\/strong> (12.7 mm)<\/td>\n24.9 – 25.3 mm<\/td>\n0.40 mm<\/td>\n6<\/td>\n<\/tr>\n
3\/4″<\/strong> (19.1 mm)<\/td>\n36.4 – 36.8 mm<\/td>\n0.40 mm<\/td>\n9<\/td>\n<\/tr>\n
1″<\/strong> (25.4 mm)<\/td>\n41.1 – 41.5 mm<\/td>\n0.50 mm<\/td>\n9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Product Features<\/strong><\/h4>\n

Our Internal Tooth Star Lock Washers are engineered for maximum reliability, offering several key advantages:<\/p>\n

    \n
  • Excellent Vibration Resistance:<\/strong> The primary function is to create a secure mechanical lock that prevents fasteners from loosening, even in high-vibration environments.<\/li>\n
  • Enhanced Frictional Grip:<\/strong> The sharp internal teeth bite into the mating surfaces, creating a strong frictional bond that resists rotation.<\/li>\n
  • Spring Tension:<\/strong> The washer’s body acts as a spring, maintaining constant pressure on the fastener assembly to ensure it remains tight.<\/li>\n
  • Durable Construction:<\/strong> Made from high-quality carbon steel with a protective black oxide finish, ensuring long-lasting performance.<\/li>\n
  • Aesthetically Clean Profile:<\/strong> With teeth on the inside, the outer edge is smooth, providing a neater appearance compared to external tooth washers.<\/li>\n
  • Cost-Effective Security:<\/strong> Provides a simple, inexpensive, and highly reliable method for securing critical bolted joints.<\/li>\n<\/ul>\n

    Product Applications<\/strong><\/h4>\n

    Internal Tooth Star Lock Washers are ideal for low-to-medium torque applications where preventing fastener loosening is critical. Common uses include:<\/p>\n

      \n
    • Electronics and Circuit Boards:<\/strong> Securing components and grounding connections where a reliable lock is needed without damaging delicate parts.<\/li>\n
    • Household Appliances:<\/strong> Preventing screws from vibrating loose in washing machines, dryers, and other small machinery.<\/li>\n
    • Automotive Interiors:<\/strong> Fastening trim panels, dashboards, and other components that are subject to constant road vibration.<\/li>\n
    • General Machinery:<\/strong> Used in a wide range of equipment to ensure bolts on covers, panels, and light-duty structural components remain secure.<\/li>\n
    • Sheet Metal Assembly:<\/strong> Provides an excellent locking action when fastening thin metal sheets together.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Our Internal Tooth Star Lock Washers are a specialized type of fastener designed to provide a simple yet highly effective solution for preventing nuts and bolts from loosening under vibration and torque. Characterized by their distinctive star-shaped internal teeth, these washers are placed under the head of a fastener or nut. When tightened, the sharp, twisted teeth bite into both the underside of the fastener head and the mating surface of the component. This dual-action grip creates a powerful mechanical lock and spring-like tension, significantly increasing friction and preventing rotational loosening. They are a cost-effective and reliable choice for securing components in a wide variety of applications.<\/p>","protected":false},"featured_media":1629,"template":"","meta":[],"product_brand":[],"product_cat":[326],"product_tag":[296,301,305,318,329],"class_list":{"0":"post-739","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-lock-washer","7":"product_tag-lock-washer-vs-flat-washer","8":"product_tag-spring-lock-washer","9":"product_tag-stainless-steel-lock-washers","10":"product_tag-stainless-steel-flat-washers","11":"product_tag-3-8-stainless-steel-washers","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product\/739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/media\/1629"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/media?parent=739"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product_brand?post=739"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product_cat?post=739"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product_tag?post=739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}