Black Oxide Carbon Steel DIN Plain E-Clip Shaft Retaining Washer Heavy Duty Locking Fastener for Automotive Industrial Use

Product Description

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Product Overview
Product Range
Product Name Black Oxide Cap Type Retaining Ring M3-M20
Size M3-M20 (Customized size acceptable, drawings in CAD, 3D, or PDF or samples are welcomed)
Material 304 Stainless Steel + 65Mn Steel (or customized)
Surface Treatment Nickel plated (or customized)
Color Silver + Black (or customized)
Sample Lead Time 3 to 5 days for stocked washers; 7 to 16 days after receiving sample orders
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Manufacturing Detail
Parts Category
Factory Profile
Professional Manufacturer Profile
Founded in 1998, our factory covers an area of 2,200–4,500 square meters. As a professional manufacturer, we specialize in standard fasteners including hole elastic retaining rings, shaft elastic retaining rings, wave washers, lock washers, flat washers, spring washers, elastic cylindrical pins, plate nuts and more, as well as providing various non-standard customization services.
Our products hold a stable share in the market and are exported to Europe, America, the Middle East and other regions, with long-term stable partnerships established with enterprises in the automotive, machinery, metallurgical mining, motor accessories and other industries. We also offer customized product design and development to meet diverse demands. Upholding the mission of "manufacturing high-quality products", we honor credit, abide by contracts and guarantee product quality, winning customers' trust through diversified operations and the principle of small profits but quick turnover. We warmly welcome domestic and overseas customers to visit, negotiate and jointly create brilliance!
Quality Standard
Production Facility
Compliance Certification
Facility Standard
Material Standards
Warehouse
Quality Inspection
Logistics Center
Frequently Asked Questions
Q1: What products do you mainly supply?
We specialize in standard fasteners including hole elastic retaining rings, shaft elastic retaining rings, split retaining rings, wave washers, internal/external serrated lock washers, flat washers, spring washers, elastic cylindrical pins, iron plate nuts, etc. We also provide non-standard customization services as per customer requirements.
Q2: Can you provide customized products? What information is needed?
Yes. For custom orders, please provide detailed drawings (2D/3D preferred), material requirements, size specifications, surface treatment needs and expected quantity. Our R&D team will confirm the feasibility and quote within 1-2 working days.
Q3: What is your MOQ (Minimum Order Quantity)?
For standard products: MOQ is 5,000 pieces per item. For customized products: MOQ depends on the product complexity, usually 10,000 pieces or above. Trial orders with small quantities are negotiable for long-term cooperation.
Q4: How do you ensure product quality?
We implement strict quality control throughout the production process: incoming material inspection → process inspection → finished product sampling inspection. All products are tested for dimensional accuracy, hardness and elasticity before shipment.
Q5: What is the delivery time?
Standard products: 7-15 working days after receiving the deposit. Customized products: 15-30 working days, depending on the order quantity and complexity.
Q6: Can I get free samples for testing?
Yes. We provide free samples (10-20 pieces per item) for quality evaluation. Customers only need to bear the shipping cost. The sample fee and shipping cost can be deducted from the formal order if the quantity meets the agreed standard.
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