(50pcs) MS M5 x 15 mm Plain Washer, (ID:5mm OD:16mm T:1.1mm), White

Overview

The MS M5 x 15 mm Flat Washer (Pack of 50 Pcs)—equivalent to DIN 125 standards—is a fundamental hardware component engineered to optimize bolted connections by evenly distributing clamping force and protecting delicate contact surfaces. When tightening M5 machine screws into plastic, aluminum, or thin sheet metal, fastening directly without a flat washer often results in surface gouging, stress concentration, and material warping. These precision-stamped steel washers provide a stable, flat bearing foundation for reliable joints.

Load Distribution & Surface Preservation

By widening the footprint of the fastener head or nut, the M5 washer lowers contact pressure against the substrate. This prevents the fastener from sinking into softer materials like acrylic panels, circuit boards, or 3D printed plastics. Additionally, the smooth face of the washer absorbs rotational friction during tightening, ensuring that the final torque is transferred cleanly into clamping preload rather than twisting the workpiece surface.

Durable Zinc-Plated Carbon Steel

Stamped from resilient carbon steel and finished with a bright white/clear electro-galvanized zinc coating, these washers offer dependable resistance against rust and environmental wear. The clean, uniform plating ensures they maintain a professional appearance in exposed electronics and visible hardware assemblies.

Common Applications

• 3D Printing & Electronics: Securing circuit boards (PCBs), raspberry pi/arduino boards, and stepper motor mounts without damaging traces or plastic bosses.

• RC Models & Robotics: Fastening chassis plates, servo brackets, carbon fiber decks, and lightweight mechanical linkages.

• Small Appliance & Device Repair: Replacing missing or corroded hardware in laptops, small enclosures, and household gadgets.

• General Workshop Fastening: Acting as flat spacers or shims under M3 nuts, cap screws, and machine bolts.