Electro Hardware MP413M03F21M2.5 Female Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP413M03F21M2.5 is a female hex circuit board standoff designed to mount and space printed circuit boards within electronic enclosures and control assemblies. Threaded M2.5 x 0.45 on the interior, it accepts a matching machine screw from above while the hex body provides a wrench flat for secure installation. The standoff measures 7 mm overall length with a full 7 mm thread depth, meaning the thread runs the entire length of the body. The hex body width across flats measures 4.5 mm. Constructed from brass with a clear zinc chromate finish per ASTM B633 Type 1 and QQ-B-626 Comp 22, it delivers corrosion resistance suitable for indoor control panel and PCB mounting applications. Electricians, controls technicians, and electronics assemblers are the primary installers.

This standoff is used in residential and commercial control panel assemblies, HVAC control boards, and general PCB mounting applications where metric M2.5 threaded hardware is specified. The fully threaded 7 mm body accommodates stacked board configurations and panel-mount assemblies that require a defined board-to-surface offset. The hex body shape allows tightening with a standard open-end wrench or hex socket without marring surrounding components. This part is sold individually but carries a minimum order quantity of 10 units, making it appropriate for service stock or production-line replenishment.

Key Features

• M2.5 x 0.45 female thread, fully threaded to 7 mm depth
• 7 mm overall length with hex body shape for wrench installation
• 4.5 mm width across flats for standard open-end wrench or socket use
• Brass construction with clear zinc chromate finish
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Length tolerance of -0.13 mm to 0.13 mm for consistent stacking height

Compatibility

Designed as a metric M2.5 x 0.45 female hex standoff for use in PCB mounting, control panel assemblies, and enclosure hardware applications where a fully threaded brass standoff of 7 mm length is required.

Installation Notes

Installation is typically performed by electronics technicians or licensed electricians during control panel assembly or PCB mounting. De-energize all circuits before servicing any control board or panel assembly. Use a correctly sized open-end wrench or hex socket matched to the 4.5 mm across-flats dimension to prevent rounding the hex body. Do not exceed the torque rating appropriate for M2.5 brass hardware, and avoid over-tightening, which can strip the brass threads or crack PCB mounting holes.