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M2–M4 Brass Copper Hex Standoff — Male-Female Hexagon Pillar Spacer for PCB Motherboard
M2–M4 Brass Copper Hex Standoff Male-Female Hexagon Pillar Spacer for PCB Motherboard
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M2–M4 Brass Copper Hex Standoff — Male-Female Hexagon Pillar Spacer for PCB & Motherboard
Solid brass male-female hex standoff spacers for PCB mounting, motherboard installation, and electronics enclosure assembly. The male end screws into the chassis or lower PCB; the female end accepts a machine screw from above to secure the upper PCB. Brass construction provides corrosion resistance, electrical conductivity for chassis grounding, and precise dimensional stability.
Key Specifications
| Material | Solid Brass (Copper-Zinc Alloy) |
|---|---|
| Thread Type | Male-Female (one end external, one end internal thread) |
| Thread Standard | Metric M2, M2.5, M3, M4 |
| Head Shape | Hexagonal pillar |
| Drive | Hex wrench (body) / flat/Phillips (male end) |
| Electrical | Conductive — suitable for chassis grounding |
Why Choose Brass Male-Female Standoffs?
- Male-female thread — male end screws directly into chassis tapped hole or threaded insert; female end accepts screw from above for secure PCB retention
- Solid brass — corrosion-resistant, conductive, and dimensionally stable for long-term PCB installations
- Chassis grounding — conductive brass provides electrical grounding path from PCB to metal chassis
- Precise hex body — wrench-tightenable for controlled torque installation
- M2–M4 range — covers all standard PCB mounting hole sizes from small modules to full ATX motherboards
Typical Applications
- ATX/mATX motherboard mounting in PC cases (M3 brass standoffs)
- Arduino, Raspberry Pi, and SBC mounting in metal enclosures
- Industrial control panel PCB mounting with chassis grounding
- 3D printer controller board mounting (RAMPS, SKR, BTT boards)
- RF and EMI shielded PCB assemblies requiring grounded standoffs
- Stacked PCB assemblies in electronics enclosures
Compatible With
M2, M2.5, M3, M4 metric machine screws. Compatible with: Arduino UNO/Mega (M3), Raspberry Pi 3/4/5 (M2.5), standard ATX motherboard mounting (M3 ×6mm standard), ESP32/ESP8266 development boards (M2.5/M3), and most PCB designs with 2.2mm, 2.7mm, 3.2mm, or 4.3mm mounting holes.
FAQ
Q: What is the standard standoff size for ATX motherboard mounting?
A: Standard ATX motherboard mounting uses M3 brass male-female standoffs, typically 6.5mm in height. The male end screws into the PC case chassis; the M3 screw from above secures the motherboard.
Q: What is the difference between male-female and female-female standoffs?
A: Male-female standoffs have one threaded post (male) and one threaded hole (female). They screw directly into a tapped hole or threaded insert in the chassis. Female-female standoffs have two threaded holes and require a screw from both ends — used for PCB-to-PCB stacking.
Q: What wrench size do I need?
A: M2 standoffs use a 4mm hex wrench; M2.5 use 5mm; M3 use 5.5mm; M4 use 7mm.
Package Contents
- Brass male-female hex standoff spacers (quantity, thread size, and length per selected variant)
- ★Product Description
- ★About us
- ★Custom cable
M2–M4 Brass Copper Hex Standoff — Male-Female Hexagon Pillar Spacer for PCB & Motherboard
Solid brass male-female hex standoff spacers for PCB mounting, motherboard installation, and electronics enclosure assembly. The male end screws into the chassis or lower PCB; the female end accepts a machine screw from above to secure the upper PCB. Brass construction provides corrosion resistance, electrical conductivity for chassis grounding, and precise dimensional stability.
Key Specifications
| Material | Solid Brass (Copper-Zinc Alloy) |
|---|---|
| Thread Type | Male-Female (one end external, one end internal thread) |
| Thread Standard | Metric M2, M2.5, M3, M4 |
| Head Shape | Hexagonal pillar |
| Drive | Hex wrench (body) / flat/Phillips (male end) |
| Electrical | Conductive — suitable for chassis grounding |
Why Choose Brass Male-Female Standoffs?
- Male-female thread — male end screws directly into chassis tapped hole or threaded insert; female end accepts screw from above for secure PCB retention
- Solid brass — corrosion-resistant, conductive, and dimensionally stable for long-term PCB installations
- Chassis grounding — conductive brass provides electrical grounding path from PCB to metal chassis
- Precise hex body — wrench-tightenable for controlled torque installation
- M2–M4 range — covers all standard PCB mounting hole sizes from small modules to full ATX motherboards
Typical Applications
- ATX/mATX motherboard mounting in PC cases (M3 brass standoffs)
- Arduino, Raspberry Pi, and SBC mounting in metal enclosures
- Industrial control panel PCB mounting with chassis grounding
- 3D printer controller board mounting (RAMPS, SKR, BTT boards)
- RF and EMI shielded PCB assemblies requiring grounded standoffs
- Stacked PCB assemblies in electronics enclosures
Compatible With
M2, M2.5, M3, M4 metric machine screws. Compatible with: Arduino UNO/Mega (M3), Raspberry Pi 3/4/5 (M2.5), standard ATX motherboard mounting (M3 ×6mm standard), ESP32/ESP8266 development boards (M2.5/M3), and most PCB designs with 2.2mm, 2.7mm, 3.2mm, or 4.3mm mounting holes.
FAQ
Q: What is the standard standoff size for ATX motherboard mounting?
A: Standard ATX motherboard mounting uses M3 brass male-female standoffs, typically 6.5mm in height. The male end screws into the PC case chassis; the M3 screw from above secures the motherboard.
Q: What is the difference between male-female and female-female standoffs?
A: Male-female standoffs have one threaded post (male) and one threaded hole (female). They screw directly into a tapped hole or threaded insert in the chassis. Female-female standoffs have two threaded holes and require a screw from both ends — used for PCB-to-PCB stacking.
Q: What wrench size do I need?
A: M2 standoffs use a 4mm hex wrench; M2.5 use 5mm; M3 use 5.5mm; M4 use 7mm.
Package Contents
- Brass male-female hex standoff spacers (quantity, thread size, and length per selected variant)
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