Raspberry Pi 3 / 4 / 5 Mounting Dimensions and Screw Hole Specifications

Raspberry Pi 3, Raspberry Pi 4, and Raspberry Pi 5 all share the same PCB size and identical mounting hole pattern, allowing full mechanical compatibility between generations.

This guide describes the exact outer dimensions and hole positions, based on the physical PCB geometry.

Viewing orientation used in this guide

• Board viewed from above
• USB and Ethernet connectors on the TOP edge
• GPIO header on the LEFT edge
• Power and HDMI connectors on the RIGHT edge
• Reference point (0,0) is the top-left corner of the PCB
• X-axis: vertical direction (top → bottom)
• Y-axis: horizontal direction (left → right)

Outer dimensions

• PCB height (X): 85.0 mm
• PCB width (Y): 56.0 mm
• PCB thickness: approximately 1.6 mm

These outer dimensions are fixed and identical for Raspberry Pi 3, 4, and 5.

Mounting holes

• 4 mounting holes
• Through-holes (no threads in the PCB)
• Designed for M2.5 screws
• Recommended clearance hole diameter: Ø2.7–2.8 mm

Mounting hole positions (center coordinates)

Measured from the top-left corner of the PCB:

• Top-left hole:
  X = 23.5 mm, Y = 3.5 mm
• Top-right hole:
  X = 23.5 mm, Y = 52.5 mm
• Bottom-left hole:
  X = 81.5 mm, Y = 3.5 mm
• Bottom-right hole:
  X = 81.5 mm, Y = 52.5 mm

Hole spacing

• Horizontal spacing (left to right): 49.0 mm
• Vertical spacing (top to bottom): 58.0 mm

Compatibility notes

• The mounting hole pattern is identical across Raspberry Pi 3, 4, and 5
• Cases, brackets, and mounting plates designed for one model will mechanically fit the others
• Connector placement and component height vary between models, but mounting geometry does not

Fastener notes

• Use standard M2.5 standoffs
• Avoid overtightening to prevent PCB stress
• Ensure sufficient clearance for connectors when mounting in enclosures