Electro Hardware MP435M03F21M2.5 Female Hex Standoff

Product Description

The ELECTRO HARDWARE MP435M03F21M2.5 is a female hex circuit board standoff designed to space and mount printed circuit boards within electronic enclosures and control assemblies. Fully threaded with an M2.5 x 0.45 metric thread, it accepts a matching screw from both ends to secure a board at a fixed standoff height. The body is machined brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards. The hexagonal body measures 4.5 mm across flats, providing a clean grip point for a wrench or nut driver during installation. This fastener is typically installed by electronics assemblers, panel builders, and electrical technicians working on control boards in HVAC equipment, industrial panels, and similar assemblies.

This standoff is suited for metric circuit board mounting applications where a reliable, corrosion-resistant spacer is required. The 18 mm overall length and 18 mm full-thread depth allow consistent board-to-surface spacing in residential and light commercial control enclosures. The brass construction with zinc plating offers good conductivity and corrosion resistance in indoor panel environments. This part ships in a minimum order quantity of 10 units per order, with individual package quantity of 1.

Key Features

• M2.5 x 0.45 metric thread, fully threaded through the entire 18 mm body length
• Hexagonal body at 4.5 mm width across flats for wrench or nut driver installation
• Brass construction with clear zinc chromate finish for corrosion resistance
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 finish standards
• Length tolerance of -0.13 to 0.13 mm for consistent board spacing
• Minimum order quantity of 10 units

Compatibility

Designed for use in metric circuit board mounting applications requiring an M2.5 x 0.45 female threaded hex standoff. Suitable for PCB assemblies in control panels, electronic enclosures, and equipment using metric hardware.

Installation Notes

Installation is typically performed by electronics assemblers or licensed electricians during control panel assembly or board replacement. De-energize all circuits and discharge any stored energy in the assembly before handling circuit boards or fasteners. Use a properly sized nut driver or wrench on the hex flats to avoid rounding the body. Do not overtighten, as excessive torque can crack the board mounting holes or strip the brass threads.