Round-head standard screws designed for reliable fastening in a wide range of applications. Key benefits Dependable fastening: round-head design provides a broad bearing surface for secure joins and reduced material damage. Easy installation: standard sizes fit common tapped holes and fixtures, making assembly and repairs quick and straightforward. Corrosion resistance: carbon-steel core with a stainless-steel surface finish offers rust protection for longer service life in normal environments. Versatile sizing: available in M2, M3, M4, and M5 to suit small to medium fastening needs. Main attributes Screw type: round-head (standard round profile) Sizes: M2, M3, M4, M5 Material: carbon steel core with stainless-steel surface finish for rust resistance Function: fastening and joining components in mechanical, electrical, and general-purpose assemblies Why customers choose this product Solves common problems like loose parts, stripped heads, and premature corrosion by providing a standardized fastener that is simple to install and resistant to rust. Works across multiple projects, reducing the need to source different fasteners for similar tasks. Typical applications Electronics and small equipment: M2 and M3 sizes for securing PCBs, instrument panels, and enclosures. Furniture, brackets, and metalwork: M4 and M5 sizes for assembling brackets, mounting hardware, and light structural joints. Maintenance and prototyping: general repairs, appliance service, and prototype builds where standard, corrosion-resistant screws are required. Practical notes Matches standard metric threads; choose the size that corresponds to your tapped hole or nut. Carbon-steel core provides strength while the stainless-steel surface finish helps protect against rust during normal use. A straightforward, reliable choice when you need standard round-head screws in M2–M5 sizes with rust protection.