Screw M8x20 Hexagon socket screw - ISO4762 - A2-70 DL

This is a hexagon socket (Allen key) head cap screw made to the ISO 4762 standard, in the M8 thread size with a 20 mm shank length, listed by Schletter under article SLT-943000-025 in A2-70 stainless steel for its solar mounting rail systems. Under ISO 4762, an M8 screw of this type has a head diameter of up to 13 mm and takes a 6 mm hexagon key. Screws of this size and standard are used throughout Schletter's rail-based mounting systems to join rails, clamps and other structural components, where the recessed socket head allows a flush fit and a controlled tightening torque. Stainless steel construction gives the corrosion resistance needed for a fastener left exposed to the weather on a roof or ground-mounted array for the life of the system.