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304/316 Stainless Steel Split Lock Washers from China - Reliable Suppliers and Factory for Fastening Solutions

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Name: Spring Washer (Split Lock Washer / Spring Lock Washer)
, Material: Made from AISI 304/316 Stainless Steel for excellent corrosion and rust resistance, or 5Mn Spring Steel for superior elasticity and high hardness.
, Standards: Compliant with GB/T 93, DIN 127, ISO 7090, ANSI B18.21.1 standards.
, Grade: Available in A2 (304), A4 (316), and 65Mn Manganese Steel.
, Specifications: Ranging from M1.6 to M64 (customizable to meet your needs).
, Surface Treatment: Stainless steel versions feature natural polishing and passivation for enhanced corrosion resistance. Carbon steel versions can be electroplated with zinc (blue-white zinc/color zinc) or undergo blackening treatment (optional).
, Design Features: This spring washer boasts a split elastic structure, offering high elasticity and rebound. It provides a full range of specifications with corrosion-resistant properties, making installation easy.
, Applications: Ideal for machinery manufacturing, automotive industry, construction engineering, general assembly, and suitable for outdoor and marine applications.
, Delivery Time: 15-30 days after receiving advance payment.
, Origin: China
, Brand: JGD
, Minimum Order Quantity: 10,000 pieces (negotiable).
, Samples: Available upon request.
, Packaging: Offered in boxed, bulk, pallet, or customized packaging options.
, OEM: Available for custom requirements.
, As a leading factory and supplier in China, we provide high-quality spring washers that meet various industrial standards.

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    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01
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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

    Our Core Advantages

    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
    Quality Control System

    Quality Control System

    • Raw Material Source Locking
    • Full Batch Traceability
    • Third Party Material Certification
    • Salt Spray Test Monitoring
    Stainless Steel Material

    Rust-proof & Corrosion-resistant Material

    Our AISI 304/316 stainless steel (grade A2/A4) contains high chromium content, forming a dense passivation film that completely isolates oxygen and moisture. Even after long-term exposure to marine climates or chemical environments, it remains bright and free from red rust. Ideal for harsh conditions such as marine, food equipment, and outdoor construction.

    Wear Resistance

    Long Service Life with High Wear Resistance

    The passivated stainless steel split washer has high surface hardness. During repeated assembly and disassembly, the contact surfaces resist wear or deformation. The elastic split structure has passed rigorous fatigue tests, enduring hundreds of thousands of cycles without permanent deformation, greatly reducing maintenance costs in high-vibration applications.

    Anti-Loosening

    Metal Material for Tightening & Anti-Loosening

    The core function is to generate continuous clamping force through elastic deformation. When the nut is tightened, the split washer stores elastic energy that pushes back against the nut, increasing thread friction and resisting loosening from impact. Unlike nylon, these metal washers do not age or become brittle across a wide temperature range.

    Application Scenarios

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    High-Quality Spring Washer Display

    Frequently Asked Questions

    Q1: What materials are available for your split lock washers?

    We primarily offer AISI 304 and 316 stainless steel for superior corrosion resistance, as well as 65Mn spring steel for high-elasticity applications requiring specific heat treatments.

    Q2: Do these washers comply with international standards?

    Yes, our manufacturing process follows international standards such as DIN 127, ASME B18.21.1, and JIS standards to ensure global compatibility and performance reliability.

    Q3: How do you ensure the quality of the heat treatment?

    We utilize an intelligent heat treatment system with real-time monitoring of temperature and atmosphere, followed by metallographic analysis in our joint laboratory to verify hardness and toughness.

    Q4: Can I request custom packaging or labeling?

    Absolutely. We provide flexible customization capabilities, including personalized packaging, specific labeling requirements, and even customizable surface treatment colors to match your branding.

    Q5: What is the typical lead time for custom specifications?

    Lead times vary based on complexity, but with our integrated multi-station cold heading technology and in-house surface treatment lines, we offer highly competitive turnaround times for both samples and bulk orders.

    Q6: Do you provide material certification for third-party audits?

    Yes, we provide full traceability with furnace number batch tracking and can supply third-party material certifications and international standard compliance declarations upon request.