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304/316 Stainless Steel Split Lock Washers from China Suppliers - Anti-Vibration Washers Factory, Customizable Sizes

Name: Spring Washer (Split Lock Washer / Spring Lock Washer)
Material: AISI 304/316 Stainless Steel (corrosion-resistant and rust-resistant), 5Mn Spring Steel (featuring excellent elasticity and high hardness)
Standards: GB/T 93, DIN 127, ISO 7090, ANSI B18.21.1
Grade: A2 (30/ A4 (316), 65Mn Manganese Steel / Spring Steel
Specifications: M1.6-M64 (customizable to meet specific needs)
Surface Treatment: Stainless steel version offers natural polishing or passivation treatment (no coating and corrosion-resistant), while carbon steel versions include electroplated zinc (available in blue-white zinc or color zinc) and optional blackening treatment
Design Features: Incorporates a split elastic structure for high elasticity and rebound, complete range of specifications, corrosion-resistant stainless steel, and easy installation
Applications: Ideal for machinery manufacturing, automotive industry, construction engineering, general assembly, as well as outdoor and marine environments
Delivery Time: 15-30 days after receipt of advance payment
Origin: Produced in China
Brand: JGD
Minimum Order Quantity: 10,000 pieces (negotiable)
Samples: Available for evaluation
Packaging: Boxed, Bulk, Pallet, or customized packaging options available
OEM: Available upon request
As a leading factory in China, we are proud to serve our customers with high-quality spring washers. Our products are competitively sourced from trusted suppliers, ensuring durability and performance in various applications.

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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

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

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

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

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

Product Features & Performance

Rust-proof & Corrosion-resistant

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.

Long Service Life & 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.

Metal Material for Anti-Loosening

The core function 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 friction torque between threads and effectively resisting loosening caused by vibration and impact. Unlike nylon, metal lock washers do not age or become brittle.

Application Scenarios

High-Quality Spring Washer Display

Frequently Asked Questions

What materials are available for your split lock washers?

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 requirements.

How do split lock washers prevent loosening?

They act like a spring, creating tension between the fastener and the substrate. This increased friction torque between the threads helps resist loosening caused by vibration.

Are your products compliant with international standards?

Yes, our manufacturing follows strict international standards such as DIN 127. We provide full traceability with furnace number batch tracking and material certifications.

Can I request customized dimensions or surface treatments?

Absolutely. We offer flexible customization for extra large/long specifications, special head shapes, and various surface treatment colors to meet your specific application needs.

Do you provide technical support for fastener selection?

Yes, we offer comprehensive technical services including selection calculation, BOM optimization, on-site failure analysis, and free sample testing.