Electro Hardware MMX1445M09-MSC Hex Standoff M3 X 0.5 25mm

Product Description

The ELECTRO HARDWARE MMX1445M09-MSC is a male-male hex circuit board standoff designed to create fixed spacing between PCBs, mounting plates, and enclosure panels. Threaded M3 x 0.5 on both ends, this standoff provides a secure mechanical connection point without the need for separate fasteners on each side. The hexagonal body measures 5 mm across flats, allowing standard hex tools to drive or hold it during installation. Overall length is 25 mm, with a 25 mm body length and thread lengths of 5 mm and 6 mm per end. Machined from Grade 18-8 303 stainless steel with a passivated finish, it resists corrosion in moderately harsh service environments. Intended for use by electronics technicians, industrial maintenance personnel, and control panel fabricators.

This standoff is suited for PCB mounting applications in control panels, industrial enclosures, HVAC control boards, and electronic assemblies requiring a metric fastener profile. The M3 x 0.5 thread size is a common metric pitch used widely in light-duty electronic hardware. The passivated stainless steel construction makes it appropriate for environments where mild exposure to moisture or chemicals is a concern. It meets the QQ-S-763 federal specification for stainless steel fasteners, which is relevant in applications where material traceability or specification compliance is required.

Key Features

• Male-male threaded on both ends for direct board-to-board or board-to-panel mounting
• M3 x 0.5 thread size with 25 mm overall length and hex body for wrench engagement
• Grade 18-8 303 stainless steel construction for corrosion resistance
• Passivated finish meets QQ-S-763 federal fastener specification
• 5 mm hex width across flats accommodates standard metric hex tooling
• Length tolerance of -0.150 mm to 0.150 mm for consistent stack height

Compatibility

Designed as a standard metric M3 x 0.5 male-male hex standoff suitable for circuit board mounting and panel assembly applications where this thread size and overall length are specified.

Installation Notes

Installation is performed by electronics technicians or control panel fabricators using a standard metric hex wrench or nut driver sized for 5 mm across flats. Always de-energize any board or panel assembly completely before installing or removing standoffs. Avoid overtightening, as excessive torque on small-diameter metric threads can strip the thread or crack PCB mounting holes. Verify thread engagement depth against the mating component specification before final assembly.