Electro Hardware MMF1301M0616M25 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MMF1301M0616M25 is an aluminum male-female hex circuit board standoff designed to create precise spacing and secure mechanical connections between PCBs and chassis surfaces or between stacked boards. With an M2.5x0.45 thread on both the male and female ends, this standoff provides a total overall length of 8.97 mm (approximately 0.353 inches) and a hex body measuring 4.5 mm (approximately 0.177 inches) across the flats. The bright, uncoated aluminum construction meets QQ-A-225A Comp 2 material standards at T3 grade, making it a reliable fastener for electronics assembly and board mounting applications.

This standoff is used in electronics assembly environments where PCBs must be mounted at a fixed standoff distance from a chassis, backplane, or secondary board. The male-female configuration allows boards to be stacked or secured in a single-pass installation. Typical applications include industrial control panels, embedded systems, power supply assemblies, and commercial electronics manufacturing. The metric M2.5x0.45 thread size fits standard PCB mounting holes common in smaller-form-factor boards. Installation is performed by electronics assemblers and field service technicians working on control or automation hardware.

Key Features

• Male-female hex configuration for PCB stacking and chassis mounting
• M2.5x0.45 metric thread on both ends for secure, consistent fastening
• Aluminum construction per QQ-A-225A Comp 2, T3 material grade
• Bright, uncoated finish for bare aluminum conductivity and clean appearance
• Hex body profile (4.5 mm across flats) accepts standard nut drivers and hex wrenches
• Length tolerance of -0.150 to 0.150 mm for dimensional consistency in close-tolerance assemblies

Compatibility

Designed as an OEM-style metric standoff for printed circuit board assemblies requiring M2.5x0.45 threaded mounting hardware with a hex body profile.

Installation Notes

Electronics assemblers and field service technicians typically install board standoffs using a nut driver or hex wrench sized to the 4.5 mm across-flats measurement. Power down and de-energize all boards and connected equipment before installing or removing standoffs. Avoid overtightening, as aluminum threads can strip or gall when excessive torque is applied. Follow applicable IPC assembly standards and the board manufacturer's mounting guidelines during installation.