We provide non-standard 304 stainless steel headless cylindrical end set screws, also known as plug screws and headless grub screws, with full specifications covering M3, M4, M5, M6, M8 and M10. Made of premium 304 stainless steel, these set screws feature excellent rust resistance, corrosion resistance and high structural stability, suitable for long-term use in humid, outdoor and harsh industrial environments. Adopting headless cylindrical end design and internal hexagon drive structure, the screws realize flush installation without protruding surface, precise positioning, tight locking and limiting fixation, and will not damage the matching parts. We support non-standard custom processing of special length, thread and size according to drawings and samples, with precise thread tolerance and fine machining workmanship. Widely used in precision machinery, mold accessories, electronic equipment, instrumentation, automation hardware and mechanical assembly industries. In stock with complete standard sizes, we support bulk wholesale, small-batch customization and long-term stable supply, providing professional non-standard fastening and plug positioning solutions for all industrial matching assembly needs.