Metric Flat Head Cap Screw Black-Oxide Alloy Steel Full Thread M3 * 0.5 * 20mm Grade 12.9 [Allen Key] Cheap

This flat head cap screw has a length of 20mm with a threading of M3 * 0.5mm [Fully Threaded]. It is made of Black-Oxide Alloy Steel and thus provides a mild resistance to corrosion in dry environments.

The cup point and the Grade 12.9 increases its strength against the pressure and has a tensile strength and hardness of 170,000 psi | Rockwell C39. Furthermore, it features a shear strenght of 102,000 psi.

ISO Metric Pitch | Coarse threads are an industry standard. These screws are classified as DIN 7991 and comply with dimensional standards.