SPACER 20mm M3x20x6 - cupper PARTS for PCB and ELECTRONICS

The Copper Spacer 20mm M3x20x6 is a cylindrical male-female or through-hole standoff designed for precise spacing and mounting of printed circuit boards (PCBs) and electronic components. Manufactured from high-purity copper, this spacer offers both mechanical rigidity and excellent electrical conductivity. The M3 internal thread (metric) allows secure fastening using M3 screws. The 20mm length defines the distance between stacked boards or between a board and enclosure. The 6mm outer diameter provides adequate bearing surface without occupying excessive board space. Copper material ensures low electrical resistance, making this spacer suitable for grounding applications where electrical continuity between boards or chassis is required. Additionally, copper resists corrosion and offers good solderability if needed. Ideal for DIY electronics, industrial PCB assemblies, and prototyping.

Specifications

Material: Copper (high purity)

Type: Spacer / standoff

Thread size: M3 (metric)

Length: 20mm

Outer diameter: 6mm

Thread type: Internal thread (female both ends, or through-hole depending on design; typical M3x20x6 is female-to-female or male-female)

Shape: Hexagonal or round (typical for copper spacers)

Conductivity: High electrical conductivity

Corrosion resistance: Good (natural copper patina)

Applications

PCB mounting and stacking – Space multiple boards securely in enclosures

Grounding and shielding – Provide low-resistance electrical path between boards or to chassis

Audio and RF circuits – Copper reduces signal loss and interference

Power supply assembly – Secure heavy components while maintaining electrical continuity

Prototyping and breadboard adapters – Create stable mechanical structures

Repair and retrofitting – Replace worn or corroded spacers in existing equipment

DIY electronics projects – Reliable mechanical support for custom designs