Stainless Steel SS316 316L Hexagon Coupling Nut

Nuts serve as connectors in machinery, securing parts through bolts or screws. They come in various types aligned with different standards: national, British, American, and Japanese. These nuts vary in materials like carbon steel, high strength, stainless steel, and plastic steel, each corresponding to specific grades within these standards.

They're categorized based on attributes like ordinary, non-standard, old national standards, new national standards, American and British systems, and German standards. National and German standards are typically denoted by the "M" designation (e.g., M8 and M16), while American and British standards use fractions (e.g., 8, 10, 1/4, and 3/8) to identify fasteners.

Nuts are vital components tightly linked to mechanical equipment. Their compatibility is reliant on internal threads, necessitating nuts and screws of identical specifications for connection. For instance, M4-0.7 nuts can solely pair with counterparts of the same specs (where the M4 denotes a 4mm inner diameter and 0.7 signifies the thread distance). This rule applies similarly to American products like the 1/4-20 nut, which exclusively matches with its equivalent (1/4 refers to a 0.25-inch inner diameter and 20 denotes 20 threads per inch).