12.9 grade M42*2 hollow high strength foot adjustment screw M42*2 outer hexagon hollow set bolt nut length 130mm
The nut is a nut, a part that is screwed together with a bolt or a screw for fastening, and all the original parts that must be used in the manufacturing machinery. There are many kinds of nuts. We often have the national standard, the British standard, the American standard, and the Japanese. According to the different materials, the nut is divided into carbon steel, high strength, stainless steel, plastic steel and other major types. According to the product attributes corresponding to different national standard numbers are divided into ordinary, non-standard, (old) national standard, new national standard, American system , English, German standard.