A nut is a component that is screwed together with a bolt or screw to provide a fastening effect. It is a necessary component for all manufacturing machinery and can be divided into several types based on the material, such as carbon steel, stainless steel, and non-ferrous metals (such as copper). Various specifications can be customized
type
-Classified by shape: Hexagonal nuts are widely used and easy to operate with a wrench; Round nuts are commonly used for axial positioning and fastening of shaft components, such as fixing bearings on motor shafts; The square nut has a square appearance and high strength, and is commonly used in situations where space requirements are not high and a large tightening force is needed.
-Classified by function: Anti loosening nuts are specially designed to prevent nut loosening, such as DISC-LOCK anti loosening nuts, suitable for vibration environments; Locking nuts can effectively prevent loosening of bolt connections, such as using two nuts to tighten or nuts with notches to match with anti loosening washers; Welding nuts are used to weld on workpieces and then match with bolts, such as in the welding parts of car bodies.
-Classified by material: Carbon steel nuts have high strength, low cost, and wide application; Stainless steel nuts have good corrosion resistance and high temperature resistance, and are used in industries such as chemical and food; Copper nuts have good conductivity and thermal conductivity, are commonly used in electrical equipment, are easy to install and disassemble, and are not prone to damaging threads.
Specifications and standards
-Nominal diameter: indicates the size of the nut, for example, the inner diameter of M4 nut is about 4mm, and the inner diameter of American 1/4-20 nut is about 0.25 inches.
-Pitch: refers to the distance between adjacent threads, expressed in millimeters in metric and in inches in American, such as M4-P0.7 nuts with a pitch of 0.7mm.
-Standards: There are national standards (GB), German standards (DIN), international standards (ISO), Japanese standards (JIS), American standards (ASTM/ANSI), etc. The size and tolerance requirements of nuts vary under different standards.
application area
-Mechanical manufacturing: used to connect various mechanical components, such as engines, gearboxes, bearings, etc., to ensure the normal operation of equipment.
-Automotive industry: used in automobile assembly and maintenance to connect components such as the body, chassis, engine, etc., ensuring driving safety.
-Aerospace: undertakes important structural connection tasks, which are related to the flight safety of aircraft, and have extremely high requirements for the quality and performance of nuts.
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