50 Pcs M4 x 20mm Hex Head Bolts, A2 Stainless Steel Fully Threaded Hex Bolts for Metal Construction & Automotive Machinery

• Premium A2 Grade Stainless Steel​:Crafted from high-quality A2 (304 equivalent) stainless steel, these M4 bolts offer exceptional corrosion resistance, rustproof performance, and high tensile strength—ideal for indoor/outdoor use, even in humid or harsh environments.
• M4 x 20mm Size & Fully Threaded Design​：Standard M4 x 20mm specification with full-length threading ensures maximum engagement and secure fastening. Coarse thread design enables easy installation and strong load-bearing capacity for heavy-duty applications.
• 50-Pack Value & Hex Head Design​：Comes with 50 hex head cap screws to meet project needs. The external hex head design allows easy torque application with standard wrenches/socket tools, suitable for professional and DIY use.
• Heavy-Duty Application Versatility​：Engineered for metal construction work, automotive machinery, industrial equipment, furniture assembly, and mechanical repairs. Perfect for securing metal-to-metal connections or heavy components.
• Durable & Reliable Fastening​:Precision-manufactured with smooth threads and burr-free surface for tight fitting and long-lasting stability. Resists vibration and loosening, ensuring safe and reliable performance in critical applications.

Our A2 stainless steel external hex head bolts are manufactured with premium high-quality 304 stainless steel material, featuring excellent rust resistance, corrosion resistance and oxidation resistance. Whether used in humid environments, outdoor exposure or daily mechanical working conditions, these bolts can maintain stable performance for a long time and avoid rust, deformation or damage effectively.