A2 70 Stainless Steel Hexagonal Socket Screw

The A2 70 Stainless Steel Hexagonal Socket Screw is a precision-engineered fastener designed for applications demanding corrosion resistance, mechanical strength, and clean installation. Featuring a hexagonal socket (Allen key) drive, these screws are machined from A2 (304) stainless steel, hardened to a 70 MPa tensile strength grade, ensuring durability in environments exposed to moisture, chemicals, or temperature extremes. Available in thread sizes from M5 to M12 with UNC, UNF, or UNEF pitches, they cater to machinery assembly, marine hardware, and food processing equipment where non-reactive materials and tight torque control are critical. The socket head design allows flush mounting, reducing protrusions in confined spaces while meeting standards like ISO 4762 and DIN 7984 for dimensional consistency and load distribution.

Surface treatments such as blue epoxy coating or black phosphating can be applied for enhanced corrosion protection in aggressive settings (e.g., offshore platforms, chemical tanks) or color-coded identification in complex assemblies. While the A2 70 base material inherently resists oxidation, optional zinc plating or electrophoretic coatings provide secondary barriers for mixed-material environments. Custom thread lengths and coatings are supported, aligning with projects requiring compliance with DIN 6912 or ISO 12474 specifications. With a minimum order quantity (MOQ) tailored to client needs, these screws balance industrial-grade performance (compatible with grades 8.8–12.9 in carbon steel variants) and adaptability, making them a go-to for sectors prioritizing hygiene, structural integrity, and long-term reliability without compromising on installation efficiency.