Screw M5x40mm (Allen Head)

From the shop's description

Screw M5x40mm (Allen Head) is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. Alloy Steel Black Oxide Head Thickness 1.5mm Thread Size – M5 Thread Pitch – 0.8 3mm Hex Length= 40mm It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.