Electro Hardware S1079-M04-F16-H Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1079-M04-F16-H is a round, female unthreaded circuit board spacer machined from aluminum alloy grade T3 and supplied in an uncoated, bright finish. It measures 0.5 inches overall length, 0.375 inches outside diameter, and 0.171 inches inside diameter, with an inside diameter tolerance of 0.000 to 0.010 inches and a length tolerance of -0.005 to 0.005 inches. Sized for a number 8 screw, this spacer is installed by electronics assemblers and technicians to maintain precise board standoff distances and mechanical separation within enclosures and control assemblies. It conforms to fastener standard QQ-A-225A Comp 2.

This spacer is used in residential and commercial electronic control assemblies where consistent board spacing is required. Typical applications include HVAC control boards, industrial control panels, and general-purpose PCB mounting scenarios. Its all-aluminum construction keeps weight low while providing rigid, corrosion-resistant standoff support. The uncoated bright finish makes it suitable for applications where a secondary coating or anodizing is not required.

Key Features

• Female unthreaded body accepts a number 8 screw for straightforward PCB mounting
• Aluminum grade T3 construction per QQ-A-225A Comp 2 for consistent material quality
• Compact 0.5-inch overall length with tight length tolerance of -0.005 to 0.005 inches
• 0.171-inch inside diameter with tolerance of 0.000 to 0.010 inches for controlled fit
• Round body profile with 0.375-inch outside diameter for standard panel and board cutouts
• Uncoated bright finish suits applications not requiring additional surface treatment

Compatibility

Designed as an OEM-style and general-purpose replacement spacer for circuit board assemblies using number 8 screw hardware in inch-measurement fastener systems.

Installation Notes

Installation is performed by electronics technicians or control board assemblers. De-energize all circuits and discharge any capacitors before handling circuit boards or installing spacers. Use hand tools sized for number 8 hardware and avoid over-torquing fasteners through the unthreaded bore, as the female bore is not threaded and relies on through-fastener clamping. Follow applicable assembly drawings and IPC standards for PCB standoff placement and spacing requirements.