Electro Hardware MP421M03F21M2.5 Female Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP421M03F21M2.5 is a fully threaded female hex circuit board standoff designed to create precise, secure spacing between PCBs and mounting surfaces. Machined from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22, this standoff offers corrosion resistance suitable for electronics assembly in commercial and industrial environments. The M2.5 x 0.45 metric thread runs the full 11 mm body length, and the 4.5 mm hex profile allows for wrench tightening without slipping. Electronic assembly technicians and field service professionals use this standoff in applications where consistent board-to-surface clearance and secure fastening are required.

This standoff is suited for printed circuit board mounting in control panels, electronics enclosures, HVAC control boards, and other equipment requiring metric M2.5 fastener hardware. The hex body shape accommodates standard nut drivers and hex wrenches, making installation efficient in tight enclosures. Its compact 11 mm overall length fits applications where minimal stack height is necessary while still providing full thread engagement through the entire body.

Key Features

• Fully threaded female interior with M2.5 x 0.45 metric thread and 11 mm thread depth for maximum engagement
• Hex body shape with 4.5 mm width across flats for wrench-drive installation
• Brass construction with clear zinc chromate finish for corrosion resistance
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Compact 11 mm overall length suits low-profile PCB mounting applications

Compatibility

Designed as an OEM-style replacement or original-fit standoff for printed circuit board assemblies requiring M2.5 x 0.45 metric female hex standoffs with an 11 mm overall length.

Installation Notes

Installation is typically performed by electronics assembly technicians or field service electricians working on control boards and panel assemblies. De-energize all equipment fully before removing or installing PCB hardware. Use a properly sized nut driver or hex wrench matched to the 4.5 mm flats to avoid rounding the hex profile. Avoid over-torquing, as brass standoffs can be damaged by excessive force.