Screw Allen head with a diameter of 3.5mm and a length of 38mm. It has a head with an internal hexagonal shape and tightens or loosens with a hex key or Allen key. It has the advantage of providing very good grip when used with the corresponding hex key or Allen key. It can also be used more easily in hard-to-reach areas. It is galvanized for corrosion protection so that it does not rust. It has a drill bit tip, allowing easy penetration of the metal surface and pre-drilling is not necessary. It is suitable for fastening thin sheets to thicker sheets or supports to metal beams.

• Diameter: 3.5mm
• Length: 38mm