Electro Hardware MP447M03F21M2.5 Female Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP447M03F21M2.5 is a female hex circuit board standoff designed to space and support PCBs within electronic enclosures, control panels, and equipment assemblies. Threaded M2.5 x 0.45 on the female end, this standoff accepts a matching machine screw to secure a board at a fixed height above a mounting surface. The hex body shape allows wrench engagement for precise tightening without slipping. Constructed from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22, it resists corrosion in light-duty indoor environments. The overall length is 24 millimeters with a thread depth of 4.8 millimeters and a width across flats of 4.5 millimeters.

This standoff is suited for use in residential and commercial control boards, HVAC equipment electronics, motor drives, relay panels, and general electrical enclosures where metric M2.5 hardware is specified. Electricians, electronics technicians, and HVAC controls technicians install these when mounting or remounting circuit boards inside equipment. The metric thread sizing and brass material make this a common choice in OEM repair and field assembly work where corrosion resistance and dimensional precision are required.

Key Features

• Female M2.5 x 0.45 thread accepts standard metric machine screws for secure PCB mounting
• Hex body profile at 4.5 millimeters width across flats allows wrench or nut driver installation
• 24 millimeter overall length provides consistent board-to-surface standoff height
• Brass construction with clear zinc chromate finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22
• 4.8 millimeter thread depth provides positive thread engagement for M2.5 fasteners
• Partially threaded design with hex body for controlled installation torque and alignment

Compatibility

Designed as an OEM-style replacement or field-assembly standoff for circuit board mounting applications requiring M2.5 x 0.45 metric female hex hardware.

Installation Notes

Installation is typically performed by electricians or electronics technicians during panel assembly or control board replacement. Always de-energize and lock out the equipment before accessing any circuit board or control enclosure. Use a hex nut driver or wrench sized to 4.5 millimeters across flats to seat the standoff without over-torquing the brass body. Verify thread engagement depth is sufficient before seating the mating board screw.