Nuts are components that securely connect mechanical equipment. Through their internal threads, nuts and bolts of the same specification can only be connected together. For example, an M4-P0.7 nut can only be connected to an M4-P0.7 bolt (in the nut, M4 refers to the nut's inner diameter, approximately 4mm, and 0.7 refers to the distance between the threads, 0.7mm). The same is true for American-made products. For example, a 1/4-20 nut can only be used with a 1/4-20 threaded rod (1/4 refers to the nut's inner diameter, approximately 0.25 inches, and 20 refers to the 20 threads per inch).
Stainless Steel
Self-locking nuts, locknuts, locking nuts, four-claw nuts, screw-in nuts, screw-in nuts, thin-shank screw nuts, self-locking hexagonal cap nuts, special-purpose nuts for anchor screws, thin hexagonal crown nuts, and eye nuts. Fine-thread all-metal hexagon flange locknuts, all-metal hexagon flange locknuts, fine-thread non-metallic insert hexagon flange locknuts, fine-thread hexagon flange nuts
Welded square nuts, welded hexagon nuts, retaining nuts, flush-mounted round nuts
Slotted round nuts, round nuts with side holes, round nuts with end holes, small round nuts
Round nuts, ring nuts, butterfly nuts
Copper materials
Copper nuts, inlaid copper nuts, knurled copper nuts, flush-mounted copper nuts, injection-molded copper nuts, etc.
Alloys
Zinc-copper alloy nuts, etc.