Electro Hardware S809-MO4-F16-E Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S809-MO4-F16-E is a round, female unthreaded circuit board spacer machined from aluminum grade T-3 stock to QQ-A-225A Comp 2 standards. It measures 0.5 inches overall length (OAL) with a 0.3125-inch outside diameter and a 0.116-inch inside diameter, sized for a 4 screw application. The uncoated finish leaves the aluminum bare, which suits most standard PCB standoff applications where anodizing or plating is not required. Installers working on control board assemblies, panel builds, or electronic enclosure work use this spacer to maintain consistent board-to-chassis clearance and prevent contact shorts.

This spacer is suited for use in residential and commercial control board assemblies, electrical enclosures, and electronic panel builds where a 4 screw size and female unthreaded configuration are specified. It is appropriate for any application requiring a compact aluminum standoff within the inch measurement system. Electricians, HVAC controls technicians, and electronics assembly professionals typically specify this style of spacer during board mounting or panel fabrication work.

Key Features

• Female unthreaded round body accepts a 4 screw for secure board mounting
• 0.5-inch OAL with tight length tolerance of -0.005 to 0.005 inches for consistent stack height
• 0.116-inch inside diameter with tolerance of 0.000 to 0.010 inches for reliable fastener fit
• 0.3125-inch outside diameter provides stable board support footprint
• Aluminum grade T-3 construction per QQ-A-225A Comp 2 fastener standard
• Uncoated finish - no additional plating or anodizing to affect dimensional tolerance

Compatibility

Designed as a standard OEM-style aluminum circuit board spacer for use with 4 screw fasteners in inch-system PCB mounting and electronic enclosure applications.

Installation Notes

Installation is performed by electricians or electronics technicians during control board assembly or panel fabrication. De-energize all circuits and discharge any stored energy in the assembly before handling circuit boards or installing standoffs. Use the appropriate 4 screw driver or nut driver and avoid overtightening, which can crack PCB mounting holes or distort the spacer body. Verify stack height requirements against board clearance specifications before finalizing fastener length selection.