DIN7991 Hexagon Socket Countersunk Head Screw Bolt

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: DIN7991
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI, GB, BSW, ASME
• Grade: 10.9
• Application: Machinery, Chemical Industry, Building
• Finish: Hot Galvanizing
• Material 1: SAE1008 / C1010 / C1020 / 10b21
• Material 2: 20mntib / 40cr / 35croma / Q355 etc
• Transport Package: We Can Follow Customer′s Request
• Specification: we can follow customer′s request
• Trademark: HQ
• Origin: China
• HS Code: 7318160000

Product Description

 

Product Description

Hexagon Socket Countersunk Head Bolts are mostly used in precision machinery, aerospace and automotive manufacturing, its countersunk head design can be flush mounted to reduce the space occupation, hexagon socket drive to provide high-torque fastening, both anti-loosening and aesthetics, suitable for the surface leveling requirements of the high, need to be installed in a concealed manner or to withstand the alternating loads of the fastening scenario.

 

Product Parameters

 

ITEM NAME:	Hexagon Socket Countersunk Head Bolt
MATERIAL :	Carbon steel ,Stainless Steel
STANDARD:	GB / DIN / ASME / ANSI / BSW
GRADE :	4.8,6.8,8.8,10.9,12.9
SIZE:	M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52  M56 M60 M64 M68 M72 M76 M80 M90 M100
SIZE:	1/8" 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8" 1" 1-1/4" 1-1/2" 1-3/4" 2" 3" 4"
FINISH :	PLAIN, ZP, YZP, HDG, Dacromet, Black Oxide ,Cr3+ , Mechanical Galvanizing,

 

Detailed Photos

Company Profile

**Handan Haoqiang Fastener Manufacturing Co., Ltd.** 

**Address:** C6-13, Shichuang Logistics Port, Yongnian District, Handan City, Hebei Province, China  

Established in 2005, Handan Haoqiang Fastener Manufacturing Co., Ltd. is a professional manufacturer and exporter specializing in high-quality fasteners. With over a decade of expertise in production and a global trade presence since 2014, we have built a reputation for delivering reliable and precision-engineered fastening solutions to clients worldwide.  

**Core Products:**  
- Nuts and bolts of various specifications  
- High-strength bolts and nuts  
- Customized fasteners tailored to client requirements  

**Compliance Standards:**  
Our products adhere to international standards, including:  

- **DIN** (German Standard)  

- **GB** (Chinese National Standard)  

- **ANSI/ASTM** (American Standard)  

- **BSW** (British Standard Whitworth)  

- **JIS** (Japanese Industrial Standard)  

Equipped with advanced manufacturing technology and strict quality control systems, we ensure durability, performance, and compliance with global industry demands. Our commitment to innovation and customer-centric service has enabled us to establish long-term partnerships across industries such as construction, machinery, automotive, and energy.  

At Haoqiang Fastener, we prioritize integrity, efficiency, and sustainability. Whether for domestic projects or international exports, we strive to exceed expectations with competitive pricing, timely delivery, and exceptional after-sales support.  

*Contact us today to discuss your fastener needs and explore how we can strengthen your projects with our expertise!* 
 

Exhibition Display

Packaging & Shipping

PACKAGE  :    25kgs Box with Pallet, 25kgs woven bags, 25 kgs Gunny bags , or we can follow customer's request

FAQ

**Product & Specifications**  
Q: What standards do your fasteners comply with?* 
A: Our products meet DIN (German), GB (China), ANSI/ASTM (USA), BSW (UK), and JIS (Japan) standards. Custom specifications are available upon request.  

**Order & Payment**  
*Q: How can I track my international order?*  
A: A real-time tracking number will be emailed once your shipment is dispatched. For urgent inquiries, contact export customer service 

**Shipping & Logistics**  
*Q: What are your delivery options for overseas customers?* 
 A: We offer sea freight (FOB/CIF), air freight, and express courier (DHL/FedEx) with competitive rates. Delivery timelines vary by destination.  

**Returns & Warranty**  
*Q: What if I receive defective products?*  
 A: We provide a 12-month quality guarantee. Report issues within 7 days of receipt with photos/video, and we'll arrange replacements or refunds promptly.  

**Technical Support**  
*Q: Can you assist with material selection for extreme environments?*  

 A: Absolutely! Our engineering team offers free consultation on corrosion-resistant, high-temperature, or high-load solutions.