Electro Hardware S801-MO4-F16-G Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S801-MO4-F16-G is a round, female unthreaded circuit board spacer machined from aluminum alloy grade T-3 to the QQ-A-225A Comp 2 fastener standard. With an overall length of 0.375 inches, an inside diameter of 0.141 inches, and an outside diameter of 0.3125 inches, this spacer is designed to maintain precise separation between a printed circuit board and a mounting surface or secondary board. The uncoated finish suits installations where bare aluminum conductivity or compatibility with conformal coatings is required. Electricians, electronics technicians, and controls specialists use this type of hardware during board mounting and panel assembly work.

This spacer is sized for No. 6 screw hardware and fits standard PCB mounting applications across residential and commercial control panels, HVAC control boards, and industrial enclosure assemblies. It is appropriate wherever a low-profile, round aluminum standoff is needed to create a controlled air gap between a board and its mounting substrate, reducing heat transfer and preventing short circuits caused by direct contact with metal surfaces.

Key Features

• Female unthreaded body accepts No. 6 screws for straightforward board fastening
• Aluminum grade T-3 construction per QQ-A-225A Comp 2 fastener standard
• Overall length of 0.375 inches with a tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.141 inches with tolerance of 0.000 to 0.010 inches for consistent screw fit
• Outside diameter of 0.3125 inches in a round body profile
• Uncoated finish for bare-aluminum applications or downstream coating compatibility

Compatibility

Designed as a standard-dimension round circuit board spacer for No. 6 screw hardware, suitable for PCB mounting applications in control panels, enclosures, and electronic assemblies using inch-system fastener sizing.

Installation Notes

Installation is typically performed by electricians or electronics technicians during board assembly or panel build-out. Ensure all power to the panel or control board is de-energized before handling circuit boards or installing standoff hardware. Use hand tools calibrated for small fasteners to avoid deforming the unthreaded bore. Follow applicable NEC guidelines when installing control boards inside electrical enclosures.