Commonly often called a setscrew or just for a bolt. The completely threaded DIN 933 or ISO 4017 should not be perplexed with its DIN 931 equivalent. A normal spanner or ratchet is typically used to match this products. Used for decades on every kind of assembly throughout the globe. https://stainlesssteelfixingssupp99998.azzablog.com/30730170/door-kick-plates-an-overview