Hex nuts are used in conjunction with bolts and screws for the purpose of connecting and securing machine parts. The 1-type six-way nuts are widely used, while the 2-type hex nuts have a thicker thickness M and are often used in situations requiring frequent assembly and disassembly. The hex thin nuts have a thinner thickness M and are mostly used when the surface space of the connected parts is limited. C-grade nuts are used on machines, equipment, or structures with rough surfaces and low precision requirements; A-grade and B-grade nuts are used on machines, equipment, or structures with smooth surfaces and high precision requirements.

For hexagon nuts, common standards include GB52, GB6170, GB6172, and DIN934. The main differences among them are: GB6170 nuts are thicker than GB52, GB6172, and DIN934, and are commonly referred to as thick nuts.

Regarding the standards for hexagon nuts, what are the differences between the new standard and the German standard? Let's briefly discuss it through comparison: The product specifications for M10, M12, M14, and M22 have differences in the width of the opposite side. The head opposite side of the new standard for M10, M12, and M14 is 1MM smaller than the German standard. For the new M22 product, its head opposite side is 2MM wider than the German standard's opposite side width, while the others are interchangeable.