PVC Washers (M1.2–M3) Pack of 20

These soft PVC washers provide electrical isolation and surface protection for drone builds. Ranging from micro M1.2 up to standard M3 sizes, they are used for mounting flight controllers, securing carbon fibre frame components, and preventing metal screw heads from shorting exposed PCB traces.

Key features

• Non-conductive material prevents electrical shorts between metal hardware and delicate electronic components.
• Soft construction distributes screw load and offers minor vibration dampening for sensitive flight controllers.
• Protects carbon fibre plates and printed circuit boards from scoring and screw-head abrasion.
• Wide size range accommodates everything from tiny whoop AIO boards to standard 30.5x30.5mm stacks.

Specifications

• Material: Soft Polyvinyl Chloride (PVC)
• Electrical Property: Non-conductive
• M1.2 Variant: 2.5mm Outer Diameter, 0.3mm Thickness
• M1.4 Variant: 4.0mm Outer Diameter, 0.3mm Thickness
• M1.7 Variant: 3.6mm Outer Diameter, 0.3mm Thickness
• M2 Variants: 5.0mm Outer Diameter, 0.5mm or 1.0mm Thickness
• M2.5 Variant: 4.0mm Outer Diameter, 1.0mm Thickness
• M3 Variant: 6.0mm Outer Diameter, 1.0mm Thickness

When installing 20x20mm or 25.5x25.5mm flight controllers, placing a PVC washer between the mounting screw and the board ensures even pressure and stops the screw head from slicing into soft silicone vibration dampeners.