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China Hexagon Socket Head Cap Bolt DIN 912 - High-Quality Suppliers and Factory Direct Pricing
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China Hexagon Socket Head Cap Bolt DIN 912 - High-Quality Suppliers and Factory Direct Pricing

China Hexagon Socket Head Cap Bolt DIN 912 - High-Quality Suppliers and Factory Direct Pricing

Explore our high-quality fasteners manufactured in China, perfect for various applications. Our FOB prices range from US $0.60 to $9.99 per piece, with a minimum order quantity of 100 pieces. As a leading supplier and factory, we have a robust supply ability of up to 10,000 pieces per month. Choose from a variety of surface treatments including Plain, Zinc Plated (ZP), GALVANIZED, Hot Dip Galvanized, and Dacromet, ensuring the right finish for your needs. Our products are made from premium materials such as Carbon Steel, Alloy Steel, Stainless Steel, Brass, and Copper, adhering to standards like DIN, GB, UNC, BSW, and JIS. We also provide certifications including ISO9001, ISO14001, ISO45001, and SGS, demonstrating our commitment to quality. Available grades include 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, A4-80, and more, making our offerings suitable for both industrial and commercial uses.

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Product Description

Product NameHexagonal socket screw
SizeM6 / M8 / M10 / M12
Grade4.8 / 8.8 / 10.9 / 12.9
MaterialSteel / Stainless Steel
Surface TreatmentYZP (Yellow Zinc Plated)
StandardDIN / ISO
CertificateISO 9001
SampleFree Samples Available
Definition and Structural Characteristics

Definition: An internal hexagonal screw is a high-performance fastener featuring a hexagonal recess on the head. This design requires an Allen Key or specific power tool bits for installation, ensuring high torque efficiency.

🛠️ Head Types Options include cylindrical heads (ISO 4762 / DIN 912), countersunk heads (DIN 7991), and flat heads. Ideal for flush surface requirements or structural depth.
⚙️ Thread Type Available in full thread or half thread configurations. Precise threading ensures secure fastening across diverse industrial materials.
Materials and Surface Treatment
🔘 Carbon Steel (8.8 / 12.9) Offers superior strength for heavy-duty machinery, automotive chassis, and structural engineering.
🛡️ Stainless Steel (304 / 316) Highest corrosion resistance. Essential for marine environments, medical equipment, and outdoor use.
✈️ Titanium Alloy Ultra-lightweight with exceptional chemical resistance, primarily used in aerospace and high-end racing.
Application Scenarios
🏭 Industrial Sector Used in machine tools, precision molds, and automation lines where frequent maintenance is required.
🚗 Automotive & Aviation Perfect for engines and components subjected to high vibration and extreme temperatures.
💻 Consumer Electronics Precision micro-screws (M1.6+) for laptops, smartphones, and professional camera gear.
Professional Usage Tips
  • Ensure the Allen key is fully seated to prevent socket stripping under high torque.
  • Match the countersunk screw angle (typically 90°) precisely during pre-drilling.
  • Use a calibrated torque wrench to meet specific engineering safety standards.
High Quality Hexagonal Socket Screw - Industrial Grade
Frequently Asked Questions
QWhat makes hexagonal socket screws better than regular Phillips screws?
Hexagonal socket screws allow for much higher torque application and significantly reduce the risk of "cam-out" (the tool slipping out). This makes them ideal for precision machinery and heavy-duty applications.
QWhat is the difference between 8.8 and 12.9 grade screws?
These numbers represent tensile strength. Grade 8.8 is high-tensile carbon steel, while 12.9 is the highest standard grade, offering maximum strength and hardness for critical mechanical connections.
QCan I use YZP screws for outdoor projects?
YZP (Yellow Zinc Plating) provides moderate corrosion resistance suitable for indoor and sheltered outdoor use. For direct exposure to harsh weather or marine environments, stainless steel is recommended.
QAre these screws compliant with international standards?
Yes, all our hexagonal socket screws are manufactured to strict DIN (e.g., DIN 912, DIN 7991) and ISO standards. Our production facilities are ISO 9001 certified to ensure consistent quality.
QHow can I get samples for testing?
We offer free samples for quality evaluation. Simply specify your required size (M6-M12), grade, and material, and we can arrange a sample shipment for your technical assessment.

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