Electro Hardware MP415M03F21M2.5 Female Hex Standoff

Product Description

The ELECTRO HARDWARE MP415M03F21M2.5 is a female hex circuit board standoff designed to create a fixed separation between a PCB and a mounting surface or between stacked boards. Machined from brass with a clear zinc chromate finish per ASTM B633 Type 1 and QQ-B-626 Comp 22, this standoff accepts an M2.5 x 0.45 thread on the female end. The overall length is 8 millimeters with a full 8 millimeters of thread depth, meaning the fastener engages the entire body length. The hex profile measures 4.5 millimeters across the flats, allowing a standard hex driver or wrench to seat and torque the standoff without slipping. Electronics assemblers and field service technicians working on control boards in HVAC, electrical, and industrial equipment applications will encounter this hardware type regularly.

This standoff is suited for metric PCB mounting applications in low-voltage control assemblies, industrial enclosures, and electronic equipment where a rigid, conductive spacer is required. The brass construction provides corrosion resistance and good electrical conductivity, while the zinc chromate finish adds a secondary layer of protection against oxidation in light-duty indoor environments. It is appropriate for residential and commercial control boards, drive enclosures, and panel-mount electronics requiring M2.5 metric fastening.

Key Features

• M2.5 x 0.45 female thread with full 8 millimeter thread depth for maximum engagement
• Brass body with clear zinc chromate finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22
• Hex body profile - 4.5 millimeters across the flats - allows wrench or driver installation
• Fully threaded body length of 8 millimeters provides consistent standoff height
• Length tolerance of -0.13 to 0.13 millimeters for precise board spacing
• Metric measurement system; compatible with standard M2.5 machine screws

Compatibility

Designed for use as a metric PCB standoff in applications requiring an M2.5 x 0.45 female threaded hex spacer. Suitable for circuit board mounting where an 8 millimeter standoff height and hex drive installation are specified.

Installation Notes

Electronics assemblers and control board technicians typically install this hardware using a hex driver or open-end wrench sized for 4.5 millimeter across-the-flats. Always power down and de-energize equipment completely before servicing any circuit board assembly. Avoid over-tightening, as brass fasteners are softer than steel and can be damaged by excessive torque. Follow the equipment manufacturer's assembly documentation for standoff placement and fastener sequence.