Electro Hardware MS1003M04F16D Round Board Spacer M3

Product Description

The ELECTRO HARDWARE MS1003M04F16D is a round, female unthreaded circuit board spacer designed for M3 screw applications in electronic assemblies. Machined from aluminum grade T3 and left uncoated with a bright finish, this spacer provides a rigid standoff between a PCB and a mounting surface or between stacked boards. The overall length is 2 mm, the outside diameter is 6 mm, and the inside diameter ranges from 3.2 to 3.6 mm. The length tolerance is -0.13 to 0.13 mm and the inside diameter tolerance is 0.000 to 0.270 mm. Electronics assembly technicians and PCB fabricators use this spacer to maintain precise board clearance and prevent electrical contact between layers or mounting hardware.

This spacer is suited for use in control boards, power supply assemblies, and embedded electronics found across HVAC control modules, industrial equipment, and general electronics manufacturing. Its compact 2 mm profile makes it appropriate for tight PCB stack-ups where minimal standoff height is required. The metric M3 screw sizing is standard across a wide range of circuit board mounting configurations. The aluminum construction keeps weight minimal while providing reliable mechanical support in both residential and light commercial electronic assemblies.

Key Features

• Female unthreaded round body accepts M3 screws for straightforward PCB mounting
• Aluminum grade T3 construction per QQ-A-225A Comp 2 fastener standard
• 2 mm overall length suits low-profile PCB stack-up applications
• 6 mm outside diameter with 3.2 to 3.6 mm inside diameter for M3 screw clearance
• Bright uncoated finish maintains dimensional accuracy without added coating buildup
• Tight length tolerance of -0.13 to 0.13 mm supports consistent board spacing

Compatibility

Designed as an OEM-style replacement or new-build component for circuit board assemblies requiring M3 metric screw sizing and a female unthreaded round spacer configuration.

Installation Notes

Installation is performed by electronics technicians and PCB assembly professionals. Power down and discharge all capacitors in the target assembly before handling circuit boards or installing spacers. Use calibrated hand tools appropriate for M3 hardware to avoid over-torquing fasteners through the unthreaded spacer bore. Follow applicable IPC assembly standards for PCB standoff installation in the relevant equipment category.