Electro Hardware MS1009M04F16D Round Board Spacer M3

Product Description

The ELECTRO HARDWARE MS1009M04F16D 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 aluminum grade T3 per fastener standard QQ-A-225A Comp 2, this spacer delivers a lightweight, corrosion-resistant solution for precision board mounting. It accepts an M3 screw, measures 5 mm overall length, features a 6 mm outside diameter, and an inside diameter ranging from 3.2 mm to 3.6 mm. The uncoated bright finish keeps tolerances tight and surfaces clean for electrical assemblies where coating thickness would interfere with fit.

This spacer is suited for electronics assembly and PCB mounting applications across industrial controls, HVAC control boards, lighting drivers, motor control panels, and general electrical enclosures. It is installed by electronics assemblers, industrial maintenance technicians, and field service engineers who require a reliable metric standoff in tight board layouts. The metric sizing makes it a direct fit in metric-dimensioned assemblies where M3 fastener patterns are standard.

Key Features

• Female unthreaded body accepts M3 screws for straightforward board-to-board or board-to-chassis standoff mounting
• Aluminum grade T3 construction per QQ-A-225A Comp 2 for lightweight, corrosion-resistant performance
• 5 mm overall length with a tight length tolerance of -0.13 mm to 0.13 mm for consistent stack height
• 6 mm outside diameter with inside diameter ranging from 3.2 mm to 3.6 mm
• Bright uncoated finish eliminates coating buildup that could affect fit in close-tolerance assemblies
• Round body shape for uniform load distribution around the mounting hole

Compatibility

Designed for use with M3 screw fasteners in metric PCB and circuit board mounting assemblies requiring a female unthreaded round spacer with a 6 mm outside diameter and 5 mm standoff height.

Installation Notes

Installation is performed by electronics assemblers or qualified technicians working on de-energized equipment. Power down and discharge any capacitors in the assembly before handling PCBs or installing standoffs. Use calibrated torque-limited drivers appropriate for M3 fasteners to avoid cracking the board or deforming the spacer. Follow applicable IPC assembly standards and the equipment manufacturer guidelines for standoff placement and board support requirements.