Electro Hardware MMF1303M0321M25 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MMF1303M0321M25 is a male-female hex circuit board standoff designed to space and secure printed circuit boards within electronic assemblies. Manufactured from brass with a zinc-plated finish that meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides corrosion resistance and reliable conductivity in tight board-mounting applications. The metric M2.5 x 0.45 thread profile runs on both the male and female ends, allowing boards to be stacked or mounted to a chassis with consistent spacing. With an overall length of approximately 0.39 inches and a hexagonal body that measures 0.18 inches across the flats, this hardware is suited for precision electronics assembly work performed by electronics technicians and PCB assembly professionals.

This standoff is used in residential and commercial electronic control assemblies, including HVAC control boards, industrial PCB enclosures, and general electronic chassis mounting applications. The hex body shape allows installation and removal with standard hex drivers or small wrenches, making it practical for field service and bench assembly alike. It is sold individually but must be ordered in multiples of 10 to meet minimum order requirements.

Key Features

• Male-female configuration allows stacked board mounting or chassis-to-board attachment
• Brass construction with zinc-plated finish for corrosion resistance
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 finish standards
• Hexagonal body shape for easy installation with standard hand tools
• M2.5 x 0.45 metric thread on both ends for compatibility with metric fastener systems
• Tight length tolerance of plus or minus 0.006 inches for consistent board spacing

Compatibility

Designed as an OEM-style metric standoff for circuit board assemblies requiring M2.5 x 0.45 male-female hex hardware with a 4.5 mm hex body width.

Installation Notes

Installation is typically performed by electronics technicians or qualified assembly personnel. Power down and discharge any capacitors in the assembly before handling circuit boards or installing standoffs. Use an appropriately sized hex driver or small wrench on the hex body to avoid stripping the plating or deforming the body. Follow applicable IPC assembly standards and the board or enclosure manufacturer guidelines for torque and spacing requirements.