Product: 30PCS Copper Hollow Tubular Rivet Converter M3 to M2 for FPV Flight Controller ESC VTX Stacks DIY Parts Why this part is useful Converts existing M3 mounting holes or posts to accept M2 fasteners, eliminating the need to standoffs or redesign mounting layouts. Copper construction provides reliable mechanical contact and electrical conductivity where grounding or signal continuity is required. Hollow tubular rivet design creates a compact, low profile conversion that preserves stack spacing and stability for tight builds. Key features Quantity: 30PCS for spare parts and multiple builds or repairs. Function: M3 to M2 conversion sleeve; fits into M3 holes or standoffs and accepts M2 screws. Material: Copper hollow tubular rivet for strength and electrical conductivity. Form factor: Tubular, low profile sleeve suitable for compact FPV stack assemblies. Compatibility: Designed for FPV flight controller stacks, ESC stacks, VTX stacks, and other small electronics that use M3 mounting points but require M2 fasteners. Benefits for builders Saves time and components by adapting existing M3 hardware to M2 fasteners without changing mounting plates. Supports neat, compact stacking in micro and mini drone builds where space is limited. Provides a conductive path when mechanical grounding is needed between stacked components. Typical use scenarios Replacing taller M3 standoffs with M2 screws in a micro FPV stack to reduce overall stack height. Repairing a flight controller or ESC stack where M3 posts are present but the replacement screws available are M2. Custom electronics or DIY sensor stacks that require converting M3 mounting holes to M2 for finer hardware or lowerprofile assemblies. How to use Insert the tubular rivet into the M3 hole or hollow standoff. Align the components to be stacked and secure with M2 screws through the rivet. For results, ensure the rivet is fully seated and the M2 screw engages cleanly through the sleeve. What is included 30PCS copper hollow tubular rivet converters sized to convert M3 mounting points to M2 screw compatibility. This pack is practical for hobbyists, drone builders, and electronics makers who need a reliable, compact way to adapt M3 hardware for M2 fasteners while keeping electrical continuity and stable stacking.