China Internal Teeth Lock Washers Manufacturer, Supplier, Factory

Internal teeth lock washers are essential components for preventing fastener loosening in demanding applications where vibration, thermal cycling, or dynamic loads are present. The unique design, featuring internal teeth that bite into the fastener and bearing surface, provides superior resistance to rotation and maintains consistent clamp load. This makes them an ideal choice for critical assemblies in automotive, aerospace, and heavy machinery. For applications requiring a different locking mechanism, consider our Light Type Single Coil Spring Lock Washers, which offer a helical spring action. When space constraints or specific load distributions are a factor, our range of Extra Large Washer and Small Washer sizes provide the necessary versatility. Alternatively, a Conical Spring Washer can be used to compensate for material settlement and maintain tension under high stress conditions.

The primary function of an Internal Teeth Lock Washer is to create a high-friction interface that prevents the nut or bolt from rotating loose. The internal teeth are precision-formed and hardened to ensure they effectively dig into the material of both the fastener and the workpiece, without causing excessive damage. This biting action secures the assembly far more reliably than a standard flat washer. Internal Teeth Lock Washers are manufactured from high-carbon steel and often feature a zinc or phosphate coating for corrosion resistance, making them suitable for use in harsh environments. They are designed for repeated use in disassembly and reassembly scenarios, maintaining their locking efficacy over multiple cycles.

Key Specifications of Internal Teeth Lock Washers

• Material: High-Carbon Steel, Stainless Steel 304/316
• Finish: Zinc Plated, Plain, Phosphate Coated
• Hardness: HRC 40-50 (for carbon steel)
• Standards: Compliant with DIN 6797, ANSI B18.21.1
• Temperature Range: -20°F to +450°F (standard finishes)