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What is an ISO 14579 A2-70 Torx Socket Head Cap Screw?
ISO 14579 socket head cap screws are metric machine screws featuring a cylindrical head with an internal Torx (Hexalobular) drive. The Torx recess provides excellent torque transfer while significantly reducing cam-out and drive wear compared to traditional drive systems, making these screws ideal for both manual and automated assembly. ISO 14579 screws are commonly installed into tapped holes or used with metric nuts in applications requiring a strong, precision fastener. They are also known as Torx socket head cap screws, hexalobular socket head screws, Torx machine screws, and internal Torx cap screws.
What material is an ISO 14579 A2-70 screw made from?
ISO 14579 screws are manufactured from A2-70 stainless steel, the most commonly specified grade of stainless steel fastener for general-purpose applications. Per DIN EN ISO 3506, A2-70 stainless steel has a minimum tensile strength of 700 N/mm² while providing excellent corrosion resistance in humid and mildly corrosive environments. The natural stainless finish resists rust and oxidation, providing long-term durability with minimal maintenance. For applications exposed to saltwater, chlorides, or aggressive chemicals, A4-70 stainless steel is generally the preferred choice.
Why choose an A2-70 ISO 14579 Torx socket head screw?
A2-70 stainless steel offers an excellent balance of corrosion resistance, mechanical strength, and value, making it suitable for the majority of industrial and commercial fastening applications. The Torx (Hexalobular) drive provides superior torque transmission, reduces cam-out, and minimizes tool wear, allowing for faster, more consistent installation than conventional drive systems. These screws are ideal where reliable fastening, clean appearance, and long service life are required.
Where are ISO 14579 A2-70 Torx socket head screws commonly used?
ISO 14579 A2-70 Torx socket head cap screws are widely used in industrial machinery, automation equipment, electronics, food processing equipment, packaging machinery, laboratory instruments, architectural assemblies, electrical enclosures, transportation equipment, and general mechanical applications. Their combination of excellent corrosion resistance, precision Torx drive, and high-strength A2-70 stainless steel makes them a popular choice for OEM manufacturing, maintenance, repair, and engineering projects where dependable performance and consistent torque control are essential.
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