sahlberg fasteners Germany sahlberg models sahlberg prices

sahlberg fasteners are a type of fastener consisting of a head and a shank, used to securely connect two parts (or components) with holes, forming 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 by the rivet's own deformation or an interference fit. There are many types of rivets, with no restriction on form. Rivets are typically used for joining objects and usually require specific specialized tools for installation. Rivet types are divided into many kinds, such as 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 in various industries such as vehicles, ships, construction, machinery, and electronics for riveting various thin structural components.

sahlberg fasteners history

The earliest metal deformable 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 components together. In 1916, when H V White of the British Aircraft Manufacturing Company first obtained the patent for blind rivets capable of single-sided riveting, few people anticipated that this type of rivet would be applied so widely. From aerospace to office machines, electronic products, and sports field equipment, it can be said that these blind rivets have now become an effective and secure method of mechanical connection. Regarding equipment invented, it is not entirely clear when hollow rivets were invented, but harnesses were invented between the 9th century and the 20th century AD. Riveted harnesses, like horseshoes with nails, liberated slaves from heavy labor. Rivets also spurred many important inventions, such as the tongs used by coppersmiths and blacksmiths, and sheep shears.

sahlberg 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 connect the riveted parts using their own deformation. Generally, cold riveting is used for sizes less than 18 mm, and hot riveting is used for sizes larger than this. However, there are exceptions; for example, 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 a plastic male pin and a female clip. No installation tools are required for installation; place the mounting base into a smooth hole, then press the head. The specially designed legs expand under force, locking firmly onto the mounting surface. They are often 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.

sahlberg 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 and corresponding specific regulations for product tolerances, mechanical properties, surface defects, surface treatment, and product testing. 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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