M4 x 16mm O\/D x 4mm Length Spacers - 303 Stainless Steel Round Spacers are a cylindrical, tube-like part, typically used to create and maintain distance between two fasteners in an assembly. Spacers ensure accurate alignment and spacing while also helping reduce friction and vibration between parts. Due to their simple and versatile design, spacers are used across multiple industries, such as electronics, automotive, engineering, construction, and manufacturing. These Spacers have been precision manufactured in-house from CZ121 brass bar using state of the art CNC Machines. They are bar turned with a chamfer on the O\/D and I\/D on both ends. These are custom spacers and are therefore manufactured to order, please allow 5-7 working days for dispatch. Due to this, unless the item is deemed faulty, this item is non-returnable and non-refundable. For larger quantities or custom sizes, please email and one of our team will provide you with a quotation. M4 x 16mm O/D x 4mm Length Spacers - 303 Stainless Steel