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304/316 Stainless Steel Split Lock Washers - China Suppliers & Factory for Anti-Vibration Fastening Solutions

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Name: Spring Washer (also known as Split Lock Washer / Spring Lock Washer)
, Material: Crafted from AISI 304/316 Stainless Steel, renowned for its corrosion and rust resistance, and 5Mn Spring Steel, which offers excellent elasticity and high hardness.
, Standards: Manufactured according to GB/T 93, DIN 127, ISO 7090, and ANSI B18.21.1 standards.
, Grade: Available in .A2 (30/ A4 (31grades and 65Mn Manganese Steel / Spring Steel.
, Specifications: Ranges from M1.6 to M64, with customizable options to meet specific needs.
, Surface Treatment: The stainless steel versions undergo natural polishing and passivation treatment for enhanced corrosion resistance, while the carbon steel versions feature electroplated zinc (available in blue-white or color zinc) and optional blackening treatment.
, Design Features: Utilizing a split elastic structure for high elasticity and rebound. These washers are corrosion-resistant, easy to install, and available in a full range of specifications.
, Applications: Ideal for machinery manufacturing, the automotive industry, construction engineering, general assembly, outdoor, and marine use.
, Delivery Time: 15-30 days following receipt of advance payment.
, Origin: Proudly manufactured in China.
, Brand: JGD
, Minimum Order Quantity: 10,000 pieces, negotiable for larger orders.
, Samples: Available upon request.
, Packaging: Offered in boxed, bulk, pallet, or customized options.
, OEM: Custom manufacturing available.
, Suppliers: We are trusted suppliers, providing high-quality spring washers directly from our factory in China.

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    Key Features

    Our self-tapping screws are crafted from food-grade 304 stainless steel and treated to achieve metric Grade 12.9 ultra-high strength, overcoming the traditional hardness limitations of standard stainless steel. Featuring a countersunk Phillips head design, these screws can be installed flush with the workpiece surface for a zero-profile finish, making them ideal for precision electronics and architectural decoration. We have optimized the thread geometry for different substrates (metal, wood) to ensure low-torque driving with high-torque clamping, effectively preventing stripping. As a superior alternative to standard Tek screws, these fasteners perform exceptionally well in thin sheet metal connections, providing an intelligent fastening solution that balances aesthetics with high load-bearing capacity.
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    Precision Manufacturing Process

    From wire rod to finished product, we strictly adhere to multiple international standards including ISO, DIN, ANSI, and GB. Utilizing multi-station cold forging technology, we ensure shank diameter tolerances are controlled within microns. Threads are formed through a precision thread rolling process to enhance fastening force. For non-standard requirements, we employ optical imaging sorters to reject minute defects like head cracks. In post-treatment, we offer a wide range of surface finishing options: from conventional zinc plating and nickel plating to highly corrosion-resistant Hot-Dip Galvanizing (H.D.G.), as well as decorative polishing and black anodizing. We even provide food-grade passivation treatment, ensuring every screw has a prolonged fatigue life in demanding environments.
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    Transparency & Customization

    As a source factory, we are committed to breaking down the information barriers of traditional trade. From mill certificates for raw materials to hardness grades (covering Grade 4.8 to Grade 12.9, as well as A2-70 and A4-80 marine-grade stainless steel), all test data is traceable. We support full-chain customization: dimensionally, we can adjust thread length and head thickness according to drawings; functionally, we can combine processes like sandblasting, electrophoretic coating (e-coating) , or chrome plating. Whether you need British Standard (BS) fasteners or require a special colored anodized finish, we offer small-batch sampling. This ensures that when you purchase fasteners from us, you not only receive high-quality products but also full transparency and control over the entire process, from material selection to packaging.
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    No Pre-Drilling · Rust Resistant · More Secure

    This stainless steel Phillips countersunk self-tapping screw, with its rust-resistant and corrosion-resistant material, one-step self-tapping design, and aesthetically pleasing countersunk head structure, has become the preferred solution for metal substrate fastening scenarios that is efficient, reliable, and aesthetically pleasing.
    Product Details

    Manufacturing Process

    Manufacturing Process

    ⚙️Multi Station Cold Heading Technology
    🔥Intelligent Heat Treatment System
    🌀Micron-Level Thread Rolling Process
    👁️Fully Automatic Optical Sorting
    🌱Environmentally Friendly Surface Treatment Line
    🔬Metallographic And Mechanical Joint Laboratory
    Quality Control System

    Quality Control System

    🛡️Raw Material Source Locking
    📋Furnace Number Batch Full Traceability
    📜Third Party Material Certification
    💎Process Parameters Open And Transparent
    🚿Salt Spray Test Real Time Monitoring
    🌍International Standard Compliance Declaration
    Flexible Customization Capability

    Flexible Customization Capability

    🎨Customizable head/slot Shapes
    🏗️Extreme Application Of Special Materials
    📏Breakthroughs In Extra Large/Long Specifications
    🧩Integrated Assembly Of Components
    🌈Customizable Surface Treatment Colors
    🏷️Personalized Packaging And Labeling
    Technical Service

    Technical Service

    🛠️On-Site Failure Analysis
    🔢Selection Calculation And BOM Optimization
    🧰Installation Tool Selection Guidance
    📦Inventory Management (VMI) Trusteeship
    🧪Free Sample Making And Testing
    🌐International Standard Translation And Interpretation
    Rust-proof Stainless Steel

    Rust-proof & Corrosion-resistant Stainless Steel Material

    Common carbon steel lock washers rust easily in humid, acidic, or outdoor environments, causing loss of locking function. Our AISI 304/316 stainless steel (grade A2/A4) contains high chromium content, forming a dense passivation film on the surface that completely isolates oxygen and moisture. Even after long-term exposure to marine climates, chemical environments, or rain, it remains bright and free from red rust or pitting. This means your fastening system requires no frequent washer replacement.

    Wear Resistance

    Long Service Life with High Wear Resistance

    The passivated stainless steel split washer has high surface hardness with no plating peeling issues. During repeated assembly and disassembly with bolts and nuts, the washer contact surfaces resist wear, galling, or deformation. The elastic split structure has passed fatigue tests, enduring hundreds of thousands of compression-recovery cycles without permanent deformation. Ideal for applications requiring regular maintenance or subject to high vibration.

    Anti-Loosening

    Metal Material for Tightening & Anti-Loosening

    The core function of a split lock washer is to generate continuous clamping force through elastic deformation. When the nut is tightened, the split washer is flattened, storing elastic energy that pushes back against the nut, increasing the friction torque between threads and effectively resisting loosening caused by vibration and impact. Unlike nylon or rubber, metal lock washers do not age or become brittle, maintaining stability from -40°C to high temperatures.

    Application Scenarios

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    High-Quality Spring Washer Display

    Frequently Asked Questions

    What materials are your split lock washers made of?
    We primarily use high-grade AISI 304 and 316 stainless steel (A2/A4) for superior corrosion resistance, as well as 65Mn spring steel for high-elasticity applications.
    Do these washers comply with international standards?
    Yes, our manufacturing process follows international standards such as DIN 127 and other relevant ISO/ASME specifications to ensure global compatibility.
    Can I request customized sizes or surface treatments?
    Absolutely. We offer flexible customization for extra-large or long specifications, special materials, and various surface treatment colors to meet your specific project needs.
    How do split washers prevent bolts from loosening?
    The split design acts like a spring, creating constant tension between the bolt/nut and the mounting surface, which significantly increases friction and resists vibration.
    Are your products suitable for marine environments?
    Yes, our 316 stainless steel washers are specifically designed to withstand harsh marine climates and chemical exposure without rusting or pitting.
    Do you provide samples for testing?
    We offer free sample making and testing services to ensure our products meet your mechanical and metallographic requirements before bulk orders.