The M4 Stainless Steel Machine Screw Bolts (20pcs) are high-quality fasteners designed for industrial and manufacturing applications. Made from durable 304 stainless steel, these machine screws feature a round hex head and are suitable for a variety of uses, including construction projects, DIY builds, and engineering components. With 20 pieces per packet, this pack is perfect for stocking up on essential hardware supplies. Its resistance to corrosion and harsh environments makes it an excellent choice for outdoor or industrial settings. Perfect for professionals and hobbyists alike, these machine screw bolts are sure to meet your needs. Matching nuts and washes available. Material: 304 stainless steel Size: M4 Length: 10mm to 50mm Packet: 20pcs