Typically called a setscrew or simply as a bolt. The entirely threaded DIN 933 or ISO 4017 should not be perplexed with its DIN 931 equal. An ordinary spanner or ratchet is usually used to suit this solution. Employed for decades on all kinds of assembly through the entire environment. https://stainlesssteelbandingsupp07058.blue-blogs.com/37427065/top-guidelines-of-masonry-screws