Electro Hardware S513-M04-F16-G Circuit Board Spacer Aluminum

Product Description

The ELECTRO HARDWARE S513-M04-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 0.25 inches in overall length with a 0.25 inch outside diameter and a 0.141 inch inside diameter. The uncoated finish leaves the aluminum bare, which is appropriate for applications where conductivity or weight are concerns. This spacer is sized for number 6 screws and provides a rigid standoff between a PCB and a mounting surface. Electricians, electronics technicians, and equipment assemblers working on control boards and panel assemblies install this type of hardware during new builds and service replacements.

This spacer suits residential and commercial electronic control board assemblies across HVAC, pool, electrical, and similar trade equipment. It is used wherever a printed circuit board must be held off a chassis or sub-panel at a fixed 0.25 inch standoff height. The compact outside diameter of 0.25 inches keeps the footprint tight in dense board layouts. Applications include furnace control boards, variable-speed drive panels, pump control modules, and other assemblies that use number 6 mounting hardware.

Key Features

• Aluminum grade T-3 construction meets QQ-A-225A Comp 2 fastener standard
• Female unthreaded body accepts number 6 screws for secure PCB standoff mounting
• 0.25 inch overall length provides precise, repeatable board-to-chassis clearance
• 0.141 inch inside diameter with a tolerance of 0.000 to 0.010 inches for consistent fit
• Length tolerance held to -0.005 to 0.005 inches for tight assembly stacking
• Uncoated finish - no added coating weight or risk of flaking in confined board areas

Compatibility

Designed as a standard number 6 screw circuit board spacer for use in any PCB assembly requiring a 0.25 inch aluminum female unthreaded standoff.

Installation Notes

Installation is typically performed by electronics technicians or trade professionals assembling or servicing control board panels. De-energize all circuits and discharge any capacitors before handling PCBs or installing spacers. Use a correctly sized number 6 fastener and do not overtighten, as aluminum spacers can deform under excessive torque. Follow applicable NEC guidelines when reassembling any electrical control enclosure.