Electro Hardware MS1009M07F16F Round Board Spacer M4

Product Description

The ELECTRO HARDWARE MS1009M07F16F is a round, female unthreaded circuit board spacer designed to create a fixed standoff gap between a PCB and a mounting surface or between stacked boards. Machined from Grade 303 stainless steel and left uncoated with a bright finish, it meets the QQ-S-763 fastener standard. The spacer measures 0.197 inches (5.0 mm) overall length, accepts an M4 screw through its 0.165 to 0.189 inch (4.20 to 4.80 mm) inside diameter bore, and carries a 0.236 inch (6.0 mm) outside diameter. It is installed by electronics technicians and field service engineers working on control boards in HVAC equipment, pool control panels, and similar trade-grade electronic assemblies.

This spacer is suited for residential and commercial PCB mounting applications where corrosion resistance and dimensional stability are required. Its stainless steel construction makes it appropriate for environments with moisture exposure, such as pool equipment enclosures or outdoor electrical cabinets. The female unthreaded body accepts an M4 fastener passed through from the board side, providing a clean, rigid standoff without threading directly into the spacer. Technicians use these in board replacement and control panel repair work where original standoff hardware must be matched precisely.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard for consistent material quality
• Female unthreaded bore sized for M4 screws with an ID range of 4.20 to 4.80 mm (0.165 to 0.189 inches)
• 5.0 mm (0.197 inch) overall length with a tight length tolerance of -0.130 to 0.130 mm
• 6.0 mm (0.236 inch) outside diameter in a round body profile for stable PCB seating
• Bright uncoated finish maintains dimensional accuracy and avoids coating buildup in tight clearances
• Corrosion-resistant stainless steel suitable for humid or outdoor enclosure environments

Compatibility

Designed as an OEM-style replacement or service spacer for circuit board mounting applications requiring an M4 female unthreaded round standoff with a 5.0 mm overall length and 6.0 mm outside diameter.

Installation Notes

Installation is typically performed by licensed electricians or electronics-qualified HVAC and pool equipment technicians. De-energize all power to the control panel or equipment before removing or installing circuit board hardware. Use calibrated torque tools appropriate for M4 fasteners to avoid cracking the PCB substrate during assembly. Verify replacement spacer dimensions match originals before reassembly to maintain correct board clearance and prevent contact faults.