Electro Hardware S825-M07-F16-E Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S825-M07-F16-E is a round, female unthreaded circuit board spacer designed to create precise standoff clearance between a PCB and a mounting surface. Machined from 18-8 Grade 303 stainless steel with no coating applied, it provides corrosion resistance suitable for electronics assemblies in demanding environments. The spacer measures 0.75 inches overall length with a 0.3125-inch outside diameter and a 0.116-inch inside diameter sized for a No. 4 screw. It meets fastener standard QQ-S-763. Electricians, control board technicians, and HVAC service pros use these spacers when mounting replacement control boards in furnaces, air handlers, and other equipment enclosures.

This spacer is suited for use in residential and light commercial electronics assemblies where a No. 4 screw pattern is required. Typical applications include PCB mounting in HVAC control panels, electrical enclosures, and similar trade equipment. The uncoated stainless steel construction makes it appropriate for environments where mild corrosion resistance is needed without the dimensional variability that coatings can introduce. It is sold individually and is intended for single-board or low-quantity service replacement scenarios.

Key Features

• Female unthreaded round body accepts No. 4 screws for secure PCB standoff mounting
• 18-8 Grade 303 stainless steel construction per QQ-S-763 fastener standard
• 0.75-inch overall length with tight length tolerance of -0.005 to 0.005 inches
• 0.116-inch inside diameter with tolerance of 0.000 to 0.010 inches for consistent screw fit
• Uncoated finish eliminates coating buildup that could affect dimensional accuracy
• Inch measurement system; compatible with standard No. 4 screw hardware

Compatibility

Designed as an OEM-style replacement or service spacer for circuit board mounting applications requiring a No. 4 screw, round body, female unthreaded standoff in the 0.75-inch length class.

Installation Notes

Installation is typically performed by a licensed electrician or qualified HVAC technician. Always de-energize the equipment and discharge any stored capacitive energy before handling circuit boards or mounting hardware. Use a calibrated torque driver appropriate for No. 4 fasteners to avoid cracking the PCB substrate. Follow applicable NEC and equipment manufacturer guidelines when reassembling control board assemblies.