DIN931 Carbon Steel Grade 8.8 Zinc Yellow Hexagon Head Bolt

The DIN931 hex bolt, commonly referred to as an external hex bolt, is a type of fastener characterized by a hexagonal head and a threaded rod featuring external threads. It is typically utilized in conjunction with a nut and is frequently employed to secure and join two components that possess holes. The DIN931 hex bolt is classified as a half-threaded bolt, comprising both a section of threaded rod and a segment of smooth rod, and is categorized into A grade and B grade.

DIN931 hex bolts featuring coarse and fine threads are frequently employed in conjunction with nuts to secure two components together through threaded connections, which are characterized as detachable connections. The minimum tensile load and guaranteed load for hex bolts with coarse and fine threads differ. Additionally, fine-thread hex bolts exhibit superior self-locking capabilities compared to their coarse thread counterparts and are typically utilized in components exposed to significant impact shocks, alternating loads, or adjustment mechanisms.

When utilizing hex bolts, it is imperative to prevent loosening in order to avert accidents and ensure the continuity of normal operations. Strategies to mitigate loosening encompass friction prevention, mechanical prevention, and various other measures. Hex bolts are extensively employed across diverse industries, including machinery, electronics, communication equipment, furniture, and construction, for purposes of production, installation, and maintenance, owing to their straightforward assembly, ease of disassembly, high efficiency, and wide-ranging applications.