[Application] -- It is widely used in home and office equipment, communication equipment, ship assembly and other machinery industries. Hexagon Hex Nuts A4 316 Stainless Steel M2 M3 M4 M5 M6 M8, 45% OFF [304 Stainless Steel] -- Made of high-quality 304 Stainless Steel Material, it's anti-rust, durable and reusable. M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 Thread Adapter Male to Male Bolt 304 Double Head Bolt 304 Stainless Steel M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 Thread Adapter Male To Male Conversion Double Head Transfer Screw Bolt - 13 Male To Male Bolt [Size] -- Size: M1XL1-M2XL2 , [Thread Pitch] -- 0., 5mm(M3) / 0., 7mm(M4) / 0., 8mm(M5) / 1mm(M6) / 1., 25mm(M8) / 1., 5mm(M10) / 1., 75mm(M12) / 2mm(14mm) / 2mm(16mm) /2., 5mm(M20) M3 M4 M5 M6 M8 M10 M12 M14 M16 M20|Upgrade your fastening with our versatile M3-M20 thread adapter, crafted from durable 304 stainless steel for reliable double-headed transfers in various applications [Material] -- Made of 304 stainless steel material, strong and durable. [Specification] -- Size = M1 * L1 - M2 * L2