The German standard for cap nuts is DIN1587, the Japanese standard is JIS1183, and the Chinese standard is GB923. The cap nuts are widely used and are useful in various mechanical industries. The main role of this product is to protect the thread from oxidation, protect the user's safety from accidental injury, and the third is beautiful. Therefore, this type of product is used in machinery or carriage that human body can often touch
Sizes from M3 to M24,
The surface treatment is mainly zinc plating, blackening, etc.