Electro Hardware S593-M04-F16-G Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S593-M04-F16-G is a round, female unthreaded circuit board spacer machined from aluminum grade T-3 to QQ-A-225A Comp 2 specifications. It measures 1.5 inches overall length with an outside diameter of 0.25 inches and an inside diameter of 0.141 inches, sized for a No. 6 screw. The uncoated finish and tight length tolerance of -0.005 to 0.005 inches make it suitable for precise PCB standoff applications in HVAC control assemblies, electrical panels, and other electronic equipment. Electricians and electronics technicians use this spacer to maintain consistent board-to-chassis clearance and prevent short circuits.

This spacer is used in residential and light commercial applications wherever printed circuit boards require rigid standoff support from a mounting surface. Typical uses include HVAC control board mounting, industrial control panel assemblies, and general-purpose electronic enclosures. Its female unthreaded bore accepts a No. 6 fastener, making it compatible with standard screw-mount PCB layouts where a fixed standoff height of 1.5 inches is required.

Key Features

• Female unthreaded bore sized for No. 6 screw fasteners
• 1.5 inches overall length for consistent PCB standoff height
• 0.25 inches outside diameter for compact board layouts
• Aluminum grade T-3, conforming to QQ-A-225A Comp 2 standard
• Uncoated finish with inside diameter tolerance of 0.000 to 0.010 inches
• Length tolerance held to -0.005 to 0.005 inches for precision fitment

Compatibility

Designed as a standard No. 6 screw female unthreaded round circuit board spacer for PCB mounting applications requiring a 1.5-inch standoff in inch-measurement systems.

Installation Notes

Installation is typically performed by electricians or electronics technicians during control board assembly or replacement. Always de-energize the equipment and discharge any stored capacitance before handling circuit boards or mounting hardware. Use a screwdriver or nut driver sized for the No. 6 fastener and avoid over-tightening, which can crack the PCB or distort the spacer bore. Follow applicable NEC requirements for panel and enclosure work.