Stainless Steel Internal Tooth Lock Washers | DIN 6797 Star Lock Washers
（Key Features）
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Premium Material: Crafted from 304/316 stainless steel for exceptional corrosion resistance, strength, and durability.
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Dual-Locking Design: Features internal sharp teeth and external serrations that bite into the nut/bolt head and mating surface, preventing loosening under vibration or shock.
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Precision Stamping: Cold-stamped to tight tolerances, ensuring consistent dimensions and reliable locking performance.
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Fully Customizable: Available in standard metric sizes (M3–M30) and custom dimensions to meet your specific fastening requirements.
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Wide Application: Ideal for use in industrial machinery, automotive, aerospace, and electrical equipment where anti-vibration locking is critical.
（Product Description）
Our stainless steel internal tooth lock washers (also known as star lock washers) are heavy-duty fastening components designed to prevent bolt and nut loosening in high-vibration environments.
Featuring a unique dual-locking design, these washers have sharp internal teeth that dig into the nut or bolt head, while external serrations bite into the mating surface. This creates a secure, non-slip connection that resists loosening caused by vibration, shock, or thermal expansion—eliminating the need for additional locking compounds or nuts.
Manufactured from high-quality 304 or 316 stainless steel, these washers offer excellent resistance to corrosion, rust, and chemicals, making them suitable for use in harsh industrial, marine, and outdoor environments. The precision cold-stamping process ensures consistent dimensions and a sharp tooth profile, guaranteeing reliable locking performance every time.
We offer a full range of standard metric sizes (from M3 to M30) and can also produce custom-sized washers to meet your unique project requirements. Whether you need standard internal tooth washers or custom variants with additional mounting holes, our precision manufacturing capabilities can deliver a solution tailored to your needs.
（Technical Specifications）
|
Parameter |
Details |
|
Material |
304 Stainless Steel / 316 Stainless Steel |
|
Standard |
DIN 6797 / GB/T 862.1 |
|
Size Range |
Metric M3, M4, M5, M6, M8, M10, M12, M16, M20, M24, M30 (Custom sizes available) |
|
Thickness |
0.5mm – 2.0mm (Depends on size) |
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Surface Treatment |
Passivated / Polished (Standard) |
|
Application |
Industrial Machinery, Automotive, Aerospace, Electrical Equipment, Marine Equipment |
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