M2 M2.5 M3 M4 304 Stainless Steel Countersunk Head Hexagon Screws - Flat Cup Hex Bolts for Machinery and Furniture Installation

Our 304 Stainless Steel Countersunk Head Hexagon Screws (Flat Cup Hex Bolts) are professional-grade hardware fasteners, designed for machinery installation, furniture assembly, hardware projects, and precision fixing applications. Crafted from high-purity 304 stainless steel, these screws offer exceptional rust resistance, corrosion protection, and structural durability—suitable for indoor, outdoor, and humid environments, making them ideal for long-term use in mechanical equipment, furniture, and industrial hardware.

 

Available in four versatile standard sizes (M2, M2.5, M3, M4), these countersunk flat head hex screws feature a flat cup design that sits flush with the surface after installation, ensuring a smooth, neat finish without protruding parts—perfect for applications where surface flatness is required. The internal hexagon drive provides strong torque transmission, allowing for secure tightening and easy installation/removal with standard hex keys, suitable for both professionals (mechanics, carpenters) and DIY enthusiasts.

 

With precision threading and a countersunk design, these hex bolts deliver a tight, stable fit, preventing loosening even with frequent use or vibration. They are widely used in machinery maintenance, furniture assembly (wardrobes, tables, cabinets), electrical equipment fixing, DIY hardware projects, and industrial assembly—combining reliability, durability, and practicality for all your fastening needs.