Electro Hardware MP443M03F21M2.5 Female Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP443M03F21M2.5 is a female hex circuit board standoff designed to create fixed spacing between PCBs, mounting plates, and chassis panels in electronic assemblies. Machined from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 specifications, this standoff accepts an M2.5 x 0.45 thread and provides a hex body shape for wrench engagement during installation and removal. The overall length is 22.0 mm with a thread depth of 4.8 mm and a width across flats of 4.5 mm. It is installed by electronics technicians, panel builders, and field service engineers working on control boards, enclosures, and instrumentation panels.

This standoff is suited for metric-threaded PCB mounting applications in industrial controls, HVAC control board assemblies, electrical enclosures, and electronic instrumentation. The partially threaded female configuration accepts a male-threaded fastener or standoff on the mating side, making it appropriate for stacked board arrangements or panel-to-board mounting where consistent, repeatable standoff height is required. The minimum order quantity is 10 pieces per order.

Key Features

• M2.5 x 0.45 female thread for standard metric PCB fastener compatibility
• 22.0 mm overall length provides consistent board-to-panel spacing
• 4.8 mm thread depth for secure fastener engagement
• Hex body with 4.5 mm width across flats allows wrench installation and removal
• Brass construction with clear zinc chromate finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22
• Partially threaded design for controlled engagement depth

Compatibility

Designed for use in metric M2.5-threaded PCB mounting applications typical of electronic control assemblies, industrial enclosures, and instrumentation panels requiring a 22.0 mm standoff height.

Installation Notes

Installation is performed by electronics technicians or panel builders using a hex wrench or nut driver sized to the 4.5 mm width across flats. Power down and de-energize all circuits before working on any control board or panel assembly. Avoid over-torquing brass hardware, as the material is susceptible to thread damage under excessive load. Follow applicable assembly drawings and manufacturer torque guidelines for the equipment being serviced.