Electro Hardware MS1027M01F21D Round Board Spacer M3 Brass

Product Description

The ELECTRO HARDWARE MS1027M01F21D is a round, female unthreaded circuit board spacer designed for M3 screw applications in PCB mounting assemblies. Constructed from brass with a zinc-plated finish meeting ASTM B633 and QQ-B-626 Comp 22 Type 1 standards, this spacer provides reliable standoff height and electrical isolation between circuit boards and chassis surfaces. It measures 14 mm overall length with a 6 mm outside diameter and an inside diameter ranging from 3.2 mm to 3.6 mm. The zinc finish adds corrosion resistance suitable for light-duty electronic enclosure environments. Electronics assembly technicians and field service techs working on control boards in HVAC, electrical, and industrial equipment will find this a direct metric-standard replacement spacer.

This spacer is suited for use in residential and commercial electronic control board assemblies, including HVAC control panels, industrial enclosures, and general PCB mounting applications where an M3-thread standoff is required. The metric sizing makes it appropriate for equipment designed to metric fastener standards. It installs between the circuit board and a mounting surface to maintain consistent board clearance and prevent unwanted contact.

Key Features

• Female unthreaded body accepts M3 screw hardware for secure PCB standoff mounting
• Brass construction with zinc-plated finish per ASTM B633 and QQ-B-626 Comp 22 Type 1
• 14 mm overall length with tight length tolerance of -0.13 mm to 0.13 mm for consistent stack height
• 6 mm outside diameter with 3.2 mm to 3.6 mm inside diameter range
• Round body shape for straightforward installation in standard PCB mounting hole patterns
• Metric system sizing compatible with M3 fastener assemblies

Compatibility

Designed as a metric M3 round female unthreaded circuit board spacer suitable for PCB standoff applications requiring a 14 mm overall length and 6 mm outside diameter in brass construction.

Installation Notes

Installation is typically performed by electronics technicians or control board service professionals. De-energize and fully power down the equipment before servicing any circuit board assembly. Use appropriately sized M3 screws and a calibrated torque driver appropriate to the board manufacturer's guidelines. Ensure the spacer seating surface is clean and flat to maintain proper board clearance and prevent stress on PCB mounting holes.