Electro Hardware MP433M03F21M2.5 Female Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP433M03F21M2.5 is a female hex circuit board standoff designed to mount and space printed circuit boards within electronic enclosures and control assemblies. Machined from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22, this standoff accepts an M2.5 x 0.45 threaded fastener. The overall length is 17 millimeters, with a fully threaded interior at the same 17 mm depth and a 4.5 mm width across flats. The hex body allows easy installation and removal with standard tooling. It is suited for electronics assembly work in HVAC control boards, electrical panels, and similar control system applications.

This standoff is used in light-duty electronic and electrical assembly applications where precise board-to-surface spacing is required. Common install scenarios include securing control boards inside HVAC equipment, variable frequency drives, and electrical enclosures. The metric M2.5 thread size is standard in compact PCB mounting configurations. Electricians and electronics technicians working on control board assemblies are the primary installers. The zinc-plated brass construction provides corrosion resistance suitable for indoor control panel environments.

Key Features

• M2.5 x 0.45 female thread accepts standard metric M2.5 fasteners
• Fully threaded interior with 17 mm thread depth for secure engagement
• Hex body profile - 4.5 mm width across flats - allows wrench or nut-driver installation
• Brass construction with clear zinc chromate finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22
• Length tolerance of -0.13 to 0.13 mm supports precise board spacing

Compatibility

Designed as an OEM-style replacement or standard-fit standoff for printed circuit board mounting applications requiring an M2.5 x 0.45 metric female hex standoff with a 17 mm overall length.

Installation Notes

Power down and de-energize all control circuits before servicing any circuit board or enclosure. Use an appropriately sized nut driver or open-end wrench sized for a 4.5 mm hex to seat the standoff without over-torquing the brass body. Follow applicable NEC guidelines when working inside electrical enclosures. Inspect thread engagement before securing the mating board fastener to confirm full thread contact.