DIN 571 M12 Stainless Steel Hexagon Head Coach Screws (Lag Screw)

• Customization: Available
• Material: Stainless Steel
• Type: Hexagon Head
• Model NO.: M20
• Groove: Hexagon
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, ISO
• Grade: 8.8,10.9,12.9,Carbon Steel A2-50,A2-70,A4-50,A4-7
• Delivery: 20-30 Days
• Certification: DIN 571
• Packag Color: Customizable
• Thread Standard: Unc/Unf/Unef/Uns/Bsw/Bsf/Metric Coarse/Metric Fine
• Custom Order: Customization by Drawing/Sample
• ODM/OEM: Available
• Service: Custom-Made Service
• Material Test Certificate: Have
• Sample: Samples in Stock Are Free with Freight Collect
• Price Terms: Fob/CFR/CIF/DDP/DAP
• Color: Customizable or Sliver
• Quality Control: 100% Quality Inspection
• Application2: Connection,Fastening
• Finish: Phosphate, Zinc Plated(De-Embrittlement)
• Transport Package: Bulk Pack Small Boxed
• Specification: DIA. M4 - M20, LENGTH 16 - 400MM
• Trademark: Qewitco
• Origin: China
• HS Code: 731816
• Production Capacity: 10000ton/Year

Product Description

Product Description

Stainless Steel Hexagon Head Coach Screws (Lag Screw) DIN 571

Stainless Steel Hex Head Coach Screws (DIN 571/ANSI B18.2.1) offer superior strength and corrosion resistance for heavy-duty timber, metal, and masonry applications. Made from high-grade stainless steel, these screws feature a standard hex head for easy installation with wrenches or sockets. Available in sizes M4-M20 (16-400mm length), they comply with international standards for reliable performance. Ideal for construction, marine, and furniture projects, our coach screws ensure durable fastening even in harsh environments. Bulk or boxed packaging options available. Request a quote today for your industrial fastener needs!

High Strength & Durability

Made of high-quality stainless steel, offering excellent corrosion and rust resistance—ideal for humid, outdoor, and highly corrosive environments (e.g., marine, chemical, construction).

High-hardness material ensures the screws resist deformation or breakage under heavy loads, suitable for securing heavy timber, metal, and concrete structures.

Versatile & Wide Applications

Heavy timber construction: Specifically designed for large wood structures (beams, posts, flooring, fences), providing superior grip and pull-out resistance.

Metal-to-wood connections: Can be used with pre-drilled holes for secure fastening.

Masonry/concrete applications: Works with wall plugs (anchors) for construction, bridges, and engineering projects.

Hex Head Design for Easy Installation

Standard hex head allows quick tightening with wrenches or sockets, making installation easier than Phillips/slotted screws—especially for large screws requiring high torque.

Even force distribution prevents stripping and ensures a secure fit.

Standardized Production, Reliable Quality

Complies with DIN 571 (German Industrial Standard) and ANSI B 18.2.1 (U.S. Standard), ensuring precise dimensions and interchangeability.

Available in M4-M20 diameters and 16-400mm lengths to meet various engineering needs.

Finish Plain& Flexible Packaging, Stable Supply

Natural stainless steel appearance, corrosion-resistant, and aesthetically suitable for high-visibility applications.

 

Bulk packing or small boxed options available for convenient storage and shipping.

Specification

Model NO.	Standardized Production, Reliable Quality
Standard	DIN571 / ANSI B 18.2.1
Size	DIA. M4 - M20, LENGTH 16 - 400MM
Materal	STAINLESS STEE
Finish	PLAIN
Packaging	BULK PACK | SMALL BOXED

Why Choose Our Coach Screws?

1,Strict QC: Each batch undergoes hardness, dimensional, and corrosion resistance testing for long-term reliability.

2, Complete Sizes: Ranging from M4 to M20 to meet different load-bearing requirements.

3,Fast Delivery: Ample stock, customizable packaging available.

Contact us now for premium stainless steel fastener solutions!

Packing & Delivery

Certifications

We hold ISO, CE, and multiple international certifications, and offer products compliant with German (DIN), Chinese (GB), Japanese (JIS), British (BS), Russian (GOST), and American (ANSI/ASME) standards. For any inquiries, please contact our sales team anytime!

Company Activity & Exhibition

Sales Service

Why Choose Qewitco?

1,19 Years of Stable Operations
Since 2004, we have built a solid reputation as a reliable industry leader. Our consistent growth and financial stability demonstrate our ability to adapt to market changes while maintaining operational excellence.
 
2,500+ Satisfied Global Clients
We serve a diverse international customer base across multiple industries, including Fortune 500 companies and SMEs. Our growing client portfolio reflects our commitment to quality and service excellence

3,98.7% On-Time Delivery Rate 
Through optimized logistics and strategic partnerships, we ensure timely deliveries worldwide. Our efficient supply chain management minimizes delays and keeps your operations running smoothly.
 
4,40% Repeat Business Ratio
Nearly half of our customers return for repeat orders, a testament to our consistent product quality, competitive pricing, and exceptional customer service.

5,24/7 Multilingual Support
Our dedicated support team provides round-the-clock assistance in multiple languages, ensuring seamless communication and quick resolution to any inquiries, regardless of time zones.

Company Profile

Qewitco Fasteners Co., Ltd

Qewitco is a British-owned enterprise headquartered in Qingdao, Shandong Province, China, specializing as a premier global supplier of industrial consumable products. Since our establishment in April 2004, we have built strong supply chain networks across mainland China, Taiwan, Malaysia, Vietnam, and Thailand, leveraging our British management expertise to deliver exceptional service to European and international markets.

With more than a decade of industry experience, Qewitco provides comprehensive solutions including dedicated account management, rigorous quality control, specialized product sourcing, and customized packaging/delivery services. Our extensive infrastructure and market knowledge enable us to source and supply virtually any product manufactured in China while ensuring outstanding value.

Committed to our core philosophy of "Delighting the Customer," we offer a complete worry-free service from factory to warehouse. Qewitco uniquely combines Western business standards with Far Eastern manufacturing advantages, delivering reliable, high-quality solutions tailored to your specific requirements.

FAQ

Q: What payment methods do you accept?

A: We mainly accept TT payments, but other payment options are available - please contact our sales team to discuss alternatives that suit your needs.

Q: What trade terms do you offer?

 A: We support various trade terms including FOB, CFR, CIF, DDP and DAP - our sales team can help you choose the most suitable option for your shipment.

Q: How do you ensure product quality?

A: All our hardware tools come with 100% quality guarantee, backed by strict quality control procedures throughout our manufacturing process.

Q: Do you provide customization services? 

A: Yes, we offer both OEM and ODM services - contact us to discuss your specific customization requirements for hardware tools.

Q: How long have you been in this business?

A: With over 20 years of experience in international trade, we guarantee both product quality and reliable service to our global customers.