Zinc-Plated Hexagon Socket Countersunk Head Bolt

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: GB/T 3103.1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, GB
• Grade: 10.9
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Blue-White Zinc Plated
• Transport Package: Bag
• Specification: M2-M20
• Trademark: LING KE
• Origin: Yong Nian
• HS Code: 731815
• Production Capacity: 200000/Year
• Package Size: 50.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 50.000kg

Product Description

Electro - galvanized hexagon socket countersunk head bolts are a popular type of fastener, widely used in diverse industries due to their unique design and beneficial properties.

Materials

Strength Grades

Applications

These bolts are commonly made from carbon steel. Carbon steel offers a good combination of strength and affordability. For more demanding applications where higher strength and better corrosion resistance are required, alloy steel may be used. In some cases, stainless steel can also be electro - galvanized to further enhance its corrosion protection in extremely harsh environments.

The strength of electro - galvanized hexagon socket countersunk head bolts is categorized by strength grades. Common grades include 4.8, 8.8, 10.9, and 12.9. The first digit (e.g., 4 in 4.8) represents the ratio of the tensile strength of the bolt to 100 MPa, and the second digit (e.g., 8 in 4.8) represents the ratio of the yield strength to the tensile strength. Higher - grade bolts, such as 10.9 and 12.9, are suitable for applications with high - load requirements, like in heavy - duty machinery or structural construction.

Machinery and Equipment
In the manufacturing of machinery, these bolts are used to fasten various components together. Their ability to provide a secure and vibration - resistant connection makes them ideal for parts that are subject to movement and stress during operation. For example, in engines, electro - galvanized hexagon socket countersunk head bolts are used to attach engine mounts, ensuring stable operation and preventing loosening due to vibrations.

Packing & Delivery

 cartons

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.