Feature:
Standard Concentricity Structure: Washers come with standard concentricity and smooth outward appearance, keeping consistent shape for stable fitting in mechanical assembly. Flat washers uniform structure helps provide steady support when used with screws and bolts in different equipment
Precise Matching Stable Locking: Cup washer offers precise matching with corresponding fasteners, providing larger contact area for bolts bearing and helping keep components in fixed position. Washers for screws thoughtful design supports better locking effect during installation and daily operation of machinery
Pure Copper Material Performance: Pure copper washers adopt pure copper as main material, showing good performance in common working conditions and keeping stable character in regular use. Flat washer copper structure maintains good condition when exposed to common air and humidity
Small Size Easy Installation: Small washers feature compact size and light weight, allowing simple installation and operation in narrow spaces or small equipment. Small washers for screws convenient size makes them easy to handle and apply in drone assembly and other mechanical work
Wide Application on Various Materials: Decorative washers can be installed on many different types of materials, adapting to diverse assembly needs in mechanical projects. Assorted washers sizes wide compatibility makes them suitable for drones, tools, home appliances and other mechanical accessories
Item Type: Countersunk Screw Washer
Material: Pure Copper

Model Inner Diameter Approx. Outer Diameter Approx. Thickness Approx. Counterbore Angle Single Weight Approx.
M3 3.1mm / 0.1in 7.9mm / 0.3in 2.05mm / 0.1in 90° 0.52 g / 0.02 oz
M4 4.1mm / 0.2in 9.9mm / 0.4in 2.5mm / 0.1in 90° 0.88 g / 0.03 oz
M5 5.1mm / 0.2in 11.9mm / 0.5in 3.2mm / 0.1in 90° 1.63 g / 0.06 oz
M6 6.1mm / 0.2in 13.9mm / 0.5in 3.5mm / 0.1in 90° 2.35 g / 0.08 oz

Package