1.Superior Performance – Manufactured from premium SCM435/4140 chrome-moly alloy steel and heat-treated to grade 12.9, these hex socket head cap screws deliver exceptional mechanical properties including 1220 MPa (177 ksi) minimum tensile strength and 1100 MPa (160 ksi) proof load. The precision-machined cylindrical head with chamfered edges provides excellent load distribution and seating characteristics, while maintaining consistent hardness (39-44 HRC) for optimal torque retention and fatigue resistance across temperature ranges from -40°C to +150°C (-40°F to +300°F).
2.Versatile Application Range – Ideal for high-stress industrial applications including CNC machine tools, automotive powertrains, heavy equipment assemblies, robotics, aerospace components, and precision machinery where maximum clamping force and reliability are essential. The clean, professional appearance and flush-mounting capability make these fasteners suitable for both internal mechanisms and external assemblies where aesthetic considerations are important alongside mechanical performance.
3.Streamlined Operation – The precision-broached hex socket provides superior torque transfer with minimal cam-out risk, allowing for installation in recessed locations where conventional external-drive fasteners cannot operate. The deep socket depth accommodates both short and long-reach hex keys or power bits, facilitating installation in tight spaces. Rolled threads with chamfered starting points ensure smooth engagement and prevent cross-threading, while the close dimensional tolerances guarantee consistent fit across production batches.
4.Certified Quality – Manufactured in ISO 9001-certified facilities to strict dimensional standards (DIN 912/ISO 4762/ASME B18.3) and mechanical property requirements (ISO 898-1). Each production lot undergoes comprehensive testing including surface hardness measurement, core hardness verification, tensile strength testing, and thread dimension validation. Available with EN 10204 3.1 material certificates for critical applications and supplied with black oxide finish for basic corrosion protection and reduced light reflection. Lot traceability marking ensures full quality documentation throughout the supply chain.
| Coating | Black Zinc, color customizable |
|---|---|
| Diameter | M3, M4, M6, M8, M10, M12, M14, M18, 1/4-20, 10#-24, 10#-32, 5/16-18, 8#-32 |
| Drive Type | Hexagonal Socket |
| Head Type | Cup Head |
| Length | 1-1/2, 1-1/4, 1-3/4, 1'', 1/2, 100, 110, 16, 20, 25, 3/4, 3/8, 30, 35, 40, 45, 5/8, 50, 60, 7/8, 70, 80, 85 |
| Manufacturer | GUXIANG |
| Material | Carbon Steel |
| Package Size(cm) | 30*20*20 |
| Shipping Term | EXW Guangdong Province |
| SKU | 1，000,000 pieces |
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