Nuts are parts that are screwed together with bolts or screws through inner threads to act as fasteners. Nuts can be divided into hexagonal nuts, flange nuts, cap nuts, square nuts, weld nuts, nylon locking nuts, etc. They are mainly used in construction, aerospace, mechanical equipment, and automobiles. Nuts can also be divided into carbon steel nuts and stainless steel nuts. Carbon steel materials include grade 4, grade 5, grade 6, grade 8, and grade 10. Stainless steel materials mainly include SS201, SS304 (A2), and SS316 (A4). The main standards are DIN934, DIN6923, DIN985, DIN557, DIN1587, DIN929, DIN6334, DIN582, and DIN936. We keep a large amount of M5-M20 DIN934 in stock all year round.