Electro Hardware S537-M07-F16-H Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S537-M07-F16-H is a round, female unthreaded circuit board spacer machined from 18-8 Grade 303 stainless steel. It measures 0.625 inches overall length (OAL) with a 0.25 inches outside diameter and a 0.171 inches inside diameter. Designed for No. 8 screw sizes, this spacer maintains precise standoff distance between a printed circuit board and a mounting surface. The uncoated stainless construction resists corrosion in environments where carbon steel hardware would degrade. Electricians, controls technicians, and electronics assembly professionals use these spacers during panel builds, control board installations, and equipment repairs where consistent board standoff height is required.

This spacer is suited for use in residential and commercial control panels, HVAC control board assemblies, electrical enclosures, and similar applications requiring a reliable, non-threaded female standoff. The round body profile and tight dimensional tolerances make it appropriate for PCB mounting applications where alignment and repeatability matter. It conforms to fastener standard QQ-S-763 and is sold individually.

Key Features

• 18-8 Grade 303 stainless steel construction resists corrosion without a coating
• Female unthreaded round body accepts No. 8 screws
• 0.625 inches OAL with tight length tolerance of -0.005 to 0.005 inches
• Inside diameter tolerance of 0.000 to 0.010 inches for consistent fit
• Meets QQ-S-763 fastener standard
• Uncoated finish - no outgassing or coating delamination risk in sealed enclosures

Compatibility

Designed as a standard No. 8 screw circuit board spacer for use in PCB standoff applications requiring a 0.625 inches overall length and 0.25 inches outside diameter female unthreaded round spacer.

Installation Notes

Installation is performed by electricians or controls technicians during panel assembly or board replacement. Power down and de-energize the enclosure or control panel completely before removing or installing circuit board hardware. Use appropriately sized No. 8 screws to avoid deforming the unthreaded bore. Follow applicable NEC guidelines when working inside electrical enclosures.