Electro Hardware S797-MO4-F16-G Round Board Spacer

Product Description

The ELECTRO HARDWARE S797-MO4-F16-G is a round, female unthreaded circuit board spacer machined from aluminum grade T-3 stock to the QQ-A-225A Comp 2 fastener standard. It measures 5/16 inches (0.3125 inches) overall length with a 0.1410-inch inside diameter and a 0.3125-inch outside diameter, sized for number 6 screw applications. The uncoated finish leaves the aluminum bare for maximum electrical conductivity or grounding continuity where coatings would interfere. Licensed electricians, electronics technicians, and industrial maintenance professionals use these spacers to set precise standoff distances between circuit boards and mounting surfaces, protecting PCB traces from contact shorts and mechanical stress.

This spacer is suited for light commercial and industrial PCB mounting applications where a compact, low-profile standoff is needed. Typical installations include control boards in HVAC equipment, panel assemblies, power supply enclosures, and similar electronic subassemblies that require a number 6 fastener pattern. The 5/16-inch body length makes it appropriate for tight chassis layouts where larger standoffs would not fit without modifying adjacent hardware.

Key Features

• Female unthreaded bore accepts number 6 screws with an inside diameter of 0.1410 inches
• Compact 5/16-inch overall length suits tight PCB mounting cavities
• Aluminum grade T-3 construction provides lightweight, corrosion-resistant performance
• Meets QQ-A-225A Comp 2 fastener standard for consistent dimensional quality
• Uncoated finish preserves bare-metal contact for grounding or continuity applications
• Round body shape with 0.3125-inch outside diameter fits standard mounting cutouts

Compatibility

Designed as an OEM-style replacement or new-installation spacer for circuit board assemblies requiring a number 6 screw, female unthreaded, round aluminum standoff with a 5/16-inch overall length.

Installation Notes

Installation is performed by electronics technicians or qualified electricians. De-energize the circuit board assembly and discharge any capacitors before handling PCB hardware. Use a number 6 fastener sized appropriately for the board thickness and chassis material - do not overtighten through an unthreaded bore, as aluminum spacers can deform under excessive clamp load. Follow applicable NEC or equipment-manufacturer guidelines for PCB mounting clearances and grounding continuity.