Electro Hardware MP409M19F16M2.5 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP409M19F16M2.5 is a female hex circuit board standoff designed to create precise, repeatable spacing between PCBs and mounting surfaces in electronic assemblies. Molded from nylon with a plain, uncoated finish, this metric standoff features an M2.5 x 0.45 female thread, a 5 mm overall length, and a full 5 mm thread depth. The hexagonal body measures 4.5 mm across the flats, allowing installation and removal with standard hex drivers or pliers. With a tensile strength of 16,500 psi, the nylon construction provides solid mechanical support while eliminating the risk of galvanic corrosion or electrical shorting between the fastener and board traces. Licensed electricians, electronics technicians, and PCB assembly professionals are the typical installers.

This standoff is suited for light-duty PCB mounting applications in commercial and industrial electronic enclosures, control panels, and embedded systems assemblies. The metric M2.5 thread size is common in compact PCB designs where board real estate is limited and precise standoff height is critical for component clearance. The 5 mm overall length keeps mated boards in close proximity, making it appropriate for stacked-board configurations or shallow enclosure formats. Nylon construction also makes this standoff a practical choice in environments where electrical isolation between the board and chassis is required.

Key Features

• Female M2.5 x 0.45 thread, fully threaded to a 5 mm depth for maximum thread engagement
• 5 mm overall length suits tight board-to-surface spacing requirements
• Hexagonal body, 4.5 mm across flats, compatible with standard hex tooling
• Nylon construction provides electrical isolation and corrosion resistance
• Plain, uncoated finish — no risk of finish contamination on sensitive PCB surfaces
• Meets MIL-P-17091B fastener standard

Compatibility

Designed for use with M2.5 x 0.45 metric fasteners in PCB mounting, stacking, and spacing applications across electronic assemblies and control enclosures where nylon hex standoffs are specified.

Installation Notes

Installation is typically performed by electronics technicians or electricians during board assembly or enclosure build-out. Power down and de-energize all circuits before installing or removing standoffs in live panels or enclosures. Use a hex driver or smooth-jaw pliers sized to the 4.5 mm flats to avoid stripping the nylon body — do not over-torque, as nylon threads are more susceptible to damage than metal. Verify thread engagement depth before applying load to the assembly.