Professional custom non-standard stainless steel large flange screws, flat head slotless screws, hex large round head screws and disc head fasteners. Made of high-quality stainless steel material, with integral one-piece forming by cold heading and CNC precision machining, high hardness, oxidation resistance and corrosion resistance, durable for long-term use. Features oversized flange disc design, large bearing surface, strong pressure resistance and firm fastening; flat head slotless structure smooth and burr-free, no need for groove drive, suitable for concealed installation and flush assembly. Hex large round head design is easy for clamping and locking, stable structure, not easy to loosen. We support custom non-standard size, head thickness, flange diameter, thread length and special shape according to drawings and samples. Widely used in precision machinery, furniture hardware, electrical equipment, automotive accessories and industrial assembly. Factory direct supply, small batch trial production and mass order processing are available, providing one-stop non-standard hardware customization solutions.