Electro Hardware MMF1321M0616M25 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MMF1321M0616M25 is a male-female hex circuit board standoff designed to create precise spacing between PCBs and mounting surfaces in electronic assemblies. Machined from aluminum alloy to the T3 temper grade and left bright uncoated, this standoff provides a lightweight, corrosion-resistant fastening solution. The M2.5 x 0.45 metric thread runs on both the male and female ends, with an overall length of 18.97 mm and a hex body width across flats of 4.50 mm. It meets the QQ-A-225A Comp 2 material standard. Electronics assemblers, field service technicians, and industrial maintenance personnel typically install these in control panel builds and PCB mounting applications.

This standoff is suited for use in low-voltage electronic enclosures, control boards, and instrumentation panels where metric M2.5 hardware is specified. It fits residential and commercial electronic assemblies that require precise, repeatable PCB stack height. The hex body shape allows wrench or nut driver installation in tight board layouts. Its uncoated aluminum finish makes it appropriate for indoor, non-corrosive environments where weight savings and electrical conductivity of the fastener are considerations.

Key Features

• M2.5 x 0.45 metric thread on both male and female ends for standard metric PCB mounting
• Overall length of 18.97 mm with a body length of 15.00 mm for consistent board spacing
• Hex body with 4.50 mm width across flats for wrench or nut driver installation
• Thread depth of 4.80 mm and thread length of 3.97 mm for secure engagement
• Aluminum T3 grade material, bright uncoated finish - lightweight and corrosion-resistant in dry environments
• Meets QQ-A-225A Comp 2 material standard

Compatibility

Designed as an OEM-style replacement or new-installation fastener for circuit board assemblies specifying M2.5 x 0.45 metric hex standoffs with an 18.97 mm overall length.

Installation Notes

Power down all equipment and discharge any capacitors before handling circuit boards or installing standoffs. Use an appropriately sized nut driver or hex wrench matched to the 4.50 mm flats to avoid rounding the body. Apply only finger-tight plus a snug quarter-turn with a tool - do not overtighten aluminum fasteners, as the material is susceptible to thread stripping. Follow the assembly documentation and any applicable IPC standards for PCB mounting hardware torque guidance.