specialsprings fasteners Germany specialsprings models specialsprings prices

specialsprings fasteners are a type of fastener consisting of a head and a shank, used to securely connect two perforated parts (or components) into a single unit. This type of connection is called a riveted joint, or simply riveting. It is a non-detachable connection. In riveting, the parts being joined are connected through the rivet's own deformation or an interference fit. There are many types of rivets with various forms. Rivets are typically used for joining objects and usually require specific specialized tools for installation. Types of rivets include semi-round head rivets, flat cone head rivets, countersunk head rivets, half-countersunk head rivets, flat head rivets, hollow rivets, tubular rivets, nameplate rivets, etc., to meet different operational requirements. They are mainly used for riveting various thin structural components in industries such as vehicles, ships, construction, machinery, and electronics.

specialsprings fasteners history

The earliest metal deformation bodies were likely the ancestors of what we now know as rivets. For example, after successfully casting large bronze statues during the Bronze Age, the Egyptians and Greeks used rivets to join the various components together. In 1916, when H V White of the British Aircraft Manufacturing Company first obtained a patent for blind rivets capable of single-sided riveting, few people anticipated that this type of rivet would see such widespread application. From aerospace to office machines, electronic products, and sports facility equipment, it can be said that these blind rivets have become an effective and secure method of mechanical connection. Hollow rivets were invented for equipment purposes; while the exact time of their invention is not entirely clear, harnesses were invented between the 9th and 18th centuries AD. Riveted harnesses, like horseshoes with nails, liberated slaves from heavy labor. Rivets also spurred many important inventions, such as iron tongs used by coppersmiths and blacksmiths, and sheep shears.

specialsprings fasteners introduction

Common types include R-type rivets, fan rivets, blind rivets (break-stem rivets), tree-shaped rivets, semi-round head, flat head, semi-hollow rivets, solid rivets, countersunk head rivets, blind rivets, and hollow rivets. These typically rely on their own deformation to connect the riveted parts. Cold riveting is generally used for sizes smaller than 16 mm, while hot riveting is used for sizes larger than this. However, there are exceptions; for instance, nameplates on certain locks are riveted using the interference fit between the rivet and the lock body hole. R-type plastic rivets, also known as expansion rivets, consist of two parts: a plastic male pin and a female clip. They do not require installation tools; place the mounting base into a smooth hole, then press down on the head. The specially designed legs expand under force, locking firmly onto the mounting surface. They are commonly used to connect plastic housings, lightweight sheets, insulating materials, circuit boards, or any other thin, lightweight materials, offering an aesthetic, practical, and easy-to-use solution.

specialsprings fasteners standards

Standards for rivet product dimensions: Specifically stipulate basic product dimensions; for products with rivets, this includes basic rivet dimensions, rivet closing, shoulder distance, undercut and chamfer, and end dimensions of external rivet parts. Standards for technical conditions of fastener rivet products. Mainly include standards for product tolerances, mechanical properties, surface defects, surface treatment, and product testing, along with corresponding specific regulations. Standards for rivet product acceptance inspection, marking, and packaging: Specifically stipulate the acceptable quality level and sampling plan for spot checks during factory acceptance, as well as product marking methods and packaging requirements. Standards for marking methods of standard parts, fasteners, rivets, bolts, and screws: Specifically stipulate complete and simplified product marking methods. Other rivet standards: Such as standards for fastener terminology, fastener product weight, etc.

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