Hot-DIP Galvanized Hexagon Socket Countersunk Head Bolt Used in Construction

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: GB/T 70.3-2008
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, GB
• Grade: 8.8
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Hot Galvanizing
• Transport Package: Bag
• Specification: M2-M20
• Trademark: LING KE
• Origin: Yong Nian
• HS Code: 731815
• Production Capacity: 200000/Year
• Package Size: 50.00cm * 25.00cm * 25.00cm
• Package Gross Weight: 60.000kg

Product Description

Hot - dip galvanized hexagon socket countersunk head bolts are high - quality fasteners widely used in various industries

Structure and Appearance

Standards and Specifications

Application Scenarios:

These bolts feature a countersunk head, which is cone - shaped and can be flush with the surface when installed, providing a smooth and neat appearance. There is a hexagonal socket in the head, also known as an allen or hex key drive. This design allows for the use of a corresponding hex wrench for installation and removal, ensuring a secure grip and precise torque application.

They usually comply with standards such as DIN 7991. The common strength grades include 4.8, 8.8, 10.9, 12.9, etc. The thread specifications range from M3 to M50 or even larger, and the length can be from 15mm to 500mm, which can meet the needs of different applications.

Due to their reliable fastening performance and good corrosion resistance, they are widely used in automotive, electronics, construction, and other industries, especially in occasions where reliable connection and long - term anti - corrosion are required.

Packing & Delivery

 cartons/plastic bags

Small Quantities (Retail/Samples):
For retail or small-batch orders (e.g., 10–100 pieces), bolts are often packed in sealed plastic bags or blister cards to prevent scratches, moisture, and loss. Blister packaging with cardboard backings is common for display in hardware stores, as it clearly shows the product while keeping it secure.
Bulk Shipments (Wholesale):
Large quantities (500–10,000+ pieces) are packed in corrugated cardboard boxes for durability during transit. Inner dividers (e.g., cardboard partitions or foam inserts) may be added to separate bolts by size, preventing friction, deformation, or thread damage. For heavy-duty or large-size bolts (e.g., M12 and above), reinforced cartons with double walls are used to withstand stacking pressure.

Company Profile

Company Name

 Hebei LING KE Metal Products Manufacturing Co.has firmly established itself as a leading force in the fastener industry, with a rich history and a commitment to excellence that spans over 10 years. Since its inception, the company has been dedicated to providing high-quality fasteners and comprehensive fastening solutions to a diverse range of industries worldwide.In recent decades, Hebei LING KE Metal Products Manufacturing Co. has expanded its footprint globally, establishing strategic partnerships and distribution centers in key regions around the world. This has allowed the company to better serve its international customer base and meet the growing demand for its products in emerging markets.