Electro Hardware MMX1405M12-MSC Hex Standoff M3x0.5 5mm

Product Description

The ELECTRO HARDWARE MMX1405M12-MSC is a male-male hex circuit board standoff designed to create fixed spacing between PCBs, panels, and chassis surfaces in electronic assemblies. It features an M3 x 0.5 metric thread on both ends, a 5 mm overall length, and a 5 mm hex body width across flats. Constructed from Grade 2 steel with a zinc-plated finish, it meets the QQ-S-633 fastener standard. This standoff is typically installed by electronics technicians, field service engineers, and HVAC or controls specialists working with control boards, terminal boards, and printed circuit assemblies requiring rigid, conductive mounting hardware.

This standoff suits residential and light commercial electronic control assemblies where consistent board-to-surface clearance is required. Common applications include HVAC control board mounting, industrial enclosure PCB installations, and any assembly where a threaded male stud on both ends is needed to stack or offset boards. The metric M3 x 0.5 thread size is standard across a wide range of control panels and circuit board mounting configurations. Its compact 5 mm overall length makes it appropriate for tight-clearance board stacks.

Key Features

• Male-male hex body provides rigid two-point threaded engagement for stable board mounting
• M3 x 0.5 metric thread on both ends suits standard PCB mounting hole patterns
• 5 mm overall length with 5 mm and 6 mm thread length options per end
• Grade 2 steel construction with zinc-plated finish for corrosion resistance
• Hex body shape allows installation and removal with standard hex wrenches or nut drivers
• Meets QQ-S-633 fastener standard

Compatibility

Designed as an OEM-style replacement or supplemental hardware component for circuit board assemblies requiring M3 x 0.5 male-male metric hex standoffs with a 5 mm overall length.

Installation Notes

Always power down and de-energize any control board or electronic assembly before installing or removing standoffs. Use an appropriately sized hex wrench or nut driver sized to the 5 mm width across flats to avoid rounding the hex body. Verify thread engagement depth before final torque to prevent cross-threading or board stress. Follow applicable equipment manufacturer guidelines and NEC requirements when working with control board assemblies.