DIN 603 Standard Cup Head Square Neck Bolt Stainless Steel SUS316 Round Head Coach Screw

Product Description

Highlights at a glance

·DIN 603 2017 Standard Cup Head Square Neck Bolt made of stainless steel for reliable structural fastening in industrial and machinery applications, ensuring high load resistance and stability under dynamic stress

·Customizable dimensions including diameter, length, and thread type based on DIN, ISO, or customer-specific drawings, supporting precise fit for specialized assembly and project needs

·Manufactured from premium stainless steel using controlled cold forging to guarantee consistent head shape, accurate threading, and superior mechanical strength for long-term performance

·Surface treatment options such as plain, passivated, or customized coatings available to enhance corrosion resistance and durability in demanding environments

·In-house quality inspection covering thread accuracy, hardness, and surface integrity, with stable supply capability for trial orders, mixed specifications, and repeat deliveries

Product Description

Competitive advantages

About this supplier

Ningbo Yinzhou Sokun Import And Export Co., Ltd.

Your Trusted Global Partner for Premier OEM Fasteners and Custom Industrial Solutions

Established in 2010, Sokun has evolved into a leading global manufacturer dedicated to providing high-quality fasteners and industrial components at competitive prices. With over a decade of industry experience and a state-of-the-art production facility, we specialize in delivering both standard and non-standard solutions tailored to the rigorous demands of clients worldwide.

Our Expertise and Capabilities We are a vertically integrated manufacturer covering production, plating/finishing, and global export. Our extensive product capabilities meet both imperial and metric standards across a wide range of sizes (M1 to M100) and grades (4.8, 6.8, 8.8, 10.9, 12.9).

Our core manufacturing competencies include:

Standard Fasteners: Screws, Nuts, Washers, Anchors, Pins, Keys, Threaded Rods, and Socket Screws.

Materials & Finishes: High-grade Stainless Steel, Carbon Steel, with durable Zinc, Plain, and Galvanized finishing options.

Customization and R&D Strengths (Made-to-Order) What differentiates Sokun is our robust OEM/ODM capability. We operate primarily on a made-to-order basis, ensuring every batch is freshly manufactured to your exact specifications. Backed by a dedicated in-house R&D department and design team, we excel at engineering specially designed fasteners for unique project needs. If the specific product you require isn't standard, our experienced sales engineers will work with you to manufacture it.

Reliable Production and Service We understand that project success relies on component caliber and timely delivery. Through efficient production management, we ensure reliable delivery times for production orders (typically 30-40 days). We are committed to providing extensive cost savings and supply chain security for our customers through consistent quality and dependable lead times.

Production workflow

Customization capabilities

Packing & Delivery

Company Profile

FAQ

Do you support custom and non-standard fasteners?
Yes. We specialize in non-standard fasteners manufactured according to drawings, samples, or technical requirements, with tolerance control applied.

Can you supply mixed fasteners based on a BOM or item list?
Yes. We are experienced in handling mixed fastener lists for engineering and project orders.Different items can be combined in one order and one shipment.

What information is required for quotation?
You can send us your BOM list, drawings (PDF / CAD / STEP), or samples.We review items one by one and provide a clear quotation.

Do you accept small or medium batch orders?
Yes. We support prototype, small and medium batch production, especially for custom and non-standard fasteners.

How do you ensure quality for mixed and custom orders?
Each item is inspected during production and before packing.Our quality system ensures accuracy and consistency for mixed fastener orders.

Can fasteners be packed separately with clear labels?
Yes. Fasteners can be packed by item, size, or project, with clear labeling for easy identification and site use.

Do you provide material certificates or inspection records?
Yes. Material certificates and inspection records are available upon request. Our quality system is ISO 9001 certified.

How soon can you respond after receiving our list or drawings?
We usually respond with technical feedback or quotation within 24 hours after receiving your information.