Metal non-standard parts: drawings provided by customers, China Non-standard custom nut Manufacturers use equipment to produce corresponding products according to drawings, usually molds, non-standard parts processing tolerance requirements, cleanliness specified by customers, there is no certain paradigm. The product from casting to finishing completely needs corresponding quality control, the process is complex and variable, and the cost is generally higher than that of standard parts.

Non-metallic non-standard parts: It is the processing of some non-metallic materials. Such as plastic, wood, stone, etc. In recent years, the development of injection molding industry and plastic molds has become more and more perfect. Surface design and programming numerical control reference have greatly improved the cost and tolerance level of Non-standard Precision nut.

First of all, we know that non-standard parts are proposed relative to standard parts, so before we understand non-standard parts, we need to know what is called standard parts. Standard parts refer to commonly used parts, such as threaded parts, rolling bearings, etc., which have been completely standardized in terms of structure, size, drawing method, marking, etc. In a broad sense, it includes standardized fasteners, connectors, transmission parts, seals, hydraulic components, pneumatic components, bearings, springs and other mechanical parts. The narrow sense only includes Non-standard Precision nut. The standard part commonly known in China is the abbreviation of standard fastener, which is a narrow concept, but the existence of a broad concept cannot be ruled out. In addition, there are also industry standard parts such as automobile standard parts and mold standard parts, which are also generalized standard parts.