Alien nut

Special-shaped nut (nut) :

Nuts are nuts are bolts or screws screwed together to tighten the role of parts, all manufacturing machinery must use a variety of original nuts, we often have national standard, British standard, American standard, Japanese standard nuts.

Nuts according to the different materials, divided into carbon steel, high strength, stainless steel, plastic steel. According to the product attributes corresponding to the country's different standard number is divided into ordinary, non-standard, (old) national standard, new national standard, American system, British system, Germany

Standard. Different sizes of thread are divided into different specifications.