DIN912 Socket Head Cap Screw, commonly known as Allen head bolt or hex socket screw, is a high-precision and widely used internal drive fastener. It features a cylindrical head with a hexagonal socket, allowing installation in confined spaces with an Allen key while providing high torque output and a neat, flush assembly appearance.
This product is designed for precision equipment, machinery, molds, automotive systems, and industrial assembly where appearance, strength, and space are critical. Our DIN912 socket screws are manufactured with strict tolerance control, ensuring stable thread fit, smooth insertion, and excellent anti-loosening performance under high-speed operation and vibration.
We provide two main material systems: high-strength carbon steel grade 12.9 for heavy-duty machinery and industrial equipment, and stainless steel A2 / A4 for corrosion-resistant applications in humid, outdoor, or food-grade environments. Surface treatments include black oxide, zinc plating, and plain finish to meet different working conditions.
With complete specifications from M2 to M16 and various lengths available in stock, our DIN912 socket head cap screws deliver reliable quality, stable performance, and long service life for high-end mechanical assembly and precision manufacturing.
Product Features & Advantages
Standard Designed According to DIN912, with high dimensional accuracy and good interchangeability.
Cylindrical head design allows installation in narrow spaces and provides clean, professional appearance.
High torque transmission, not easy to slip during installation, suitable for automated assembly.
Precise thread processing ensures stable matching and strong locking force.
12.9 high-strength carbon steel provides excellent tensile, wear and fatigue resistance.
Stainless steel A2/A4 provides superior rust and corrosion resistance for long-term use.
Stable quality, complete specifications, suitable for long-term supply and industrial projects.
Standard & Material
Standard: DIN912
Material: Carbon Steel 12.9 Grade | Stainless Steel A2-70 / A4-80
Surface: Black Oxide | Zinc Plated | Natural (Plain)
Drive: Hex Socket (Allen Key Drive)
Size Range: M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16
Length: 3mm – 100mm (full range available)
Applications
Precision Machinery | Molds & Tooling | Automotive Parts | Electronic Equipment
Automation Equipment | Furniture Assembly | Medical Devices | Communication Equipment
Motor & Engine Parts | Hydraulic Systems | High-Grade Industrial Assembly
Packing
Small box + Carton + Pallet
Certification
ISO9001, Material Test Report, Hardness Test Report
