Electro Hardware MS1025M04F16F Circuit Board Spacer M4

Product Description

The ELECTRO HARDWARE MS1025M04F16F is a round, female unthreaded circuit board spacer designed for M4 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. It measures 13 mm overall length with a 6 mm outside diameter and an inside diameter ranging from 4.2 mm to 4.8 mm, accommodating M4 hardware with controlled clearance. The part meets fastener standard QQ-A-225A Comp 2. Electronics technicians, panel builders, and automation integrators use this spacer in control boards, enclosures, and instrumentation assemblies.

This spacer is suited for light commercial and industrial electronic panel assemblies where a metric M4 standoff is required. Common install scenarios include PCB mounting inside HVAC control enclosures, electrical panel subassemblies, and instrumentation housings where a non-threaded female body provides a clean pass-through clearance hole. The compact 6 mm OD keeps the footprint minimal on densely populated boards. Because this part ships as a single piece with a minimum order quantity of 10 units, it is typically sourced for small batch assembly or service replacement work.

Key Features

• Female unthreaded body accepts M4 screw hardware with 4.2 mm to 4.8 mm internal clearance
• 13 mm overall length with a tight length tolerance of -0.13 mm to 0.13 mm for consistent stack height
• 6 mm outside diameter in a round body shape for compact PCB footprint
• Aluminum grade T3 construction provides lightweight, corrosion-resistant standoff performance
• Bright uncoated finish meets QQ-A-225A Comp 2 fastener standard
• Metric system of measurement throughout for direct compatibility with M4 hardware specifications

Compatibility

Designed as an OEM-style replacement or new-build component for electronic assemblies requiring a metric M4 round circuit board spacer with a female unthreaded body.

Installation Notes

Installation is typically performed by electronics technicians or panel builders during board assembly or service. De-energize all circuits and discharge any capacitive loads before working inside a control enclosure. Use the appropriate M4 fastener and apply even seating pressure to avoid cracking the PCB substrate. Follow applicable IPC assembly standards and enclosure manufacturer guidelines for standoff placement and torque practices.