Electro Hardware MP423M06F16M2.5 Female Hex Standoff

Product Description

The ELECTRO HARDWARE MP423M06F16M2.5 is a female hex circuit board standoff designed to create fixed spacing between PCBs or between a PCB and a mounting surface. Machined from aluminum alloy to material grade T3 and finished with a plain, bright uncoated surface, this standoff accepts an M2.5 x 0.45 threaded fastener on the female end. Overall length is 12.0 mm, with a full 12.0 mm thread depth, meaning the internal thread runs the entire body length. The hexagonal body measures 4.5 mm across the flats, providing a standard wrench grip for precise installation torque. This is a metric-dimensioned fastener built to QQ-A-225A Comp 2 specification.

This standoff is used in electronic enclosure assembly, control board mounting, and PCB stackup applications common in HVAC control systems, electrical panels, and industrial equipment. Electricians and electronics assembly technicians install these when securing control boards to chassis, DIN rail enclosures, or panel sub-plates. The lightweight aluminum construction keeps added mass minimal in weight-sensitive assemblies, while the hex body allows socket or open-end wrench installation in tight board-level clearances.

Key Features

• Female M2.5 x 0.45 internal thread, fully threaded for the full 12.0 mm body length
• Hexagonal body, 4.5 mm width across flats, for positive wrench engagement
• Aluminum construction, material grade T3, plain bright finish with no coating
• Meets QQ-A-225A Comp 2 fastener specification
• Length tolerance of -0.13 to 0.13 mm for consistent stack height control
• Metric measurement system; UNSPSC code 31161816

Compatibility

Designed as a standard metric female hex standoff for PCB and circuit board mounting applications requiring an M2.5 x 0.45 thread with a 12.0 mm overall length and 4.5 mm hex body.

Installation Notes

Installation is typically performed by a licensed electrician or electronics assembly technician. Always de-energize the equipment and discharge any capacitors before working on or near circuit boards. Use a properly sized open-end or socket wrench on the 4.5 mm hex flats to avoid rounding. Do not overtighten against the PCB surface, as aluminum threads and board mounting holes can be damaged by excessive torque.