Electro Hardware MMX1406M09MSC-1 Hex Standoff M4

Product Description

The ELECTRO HARDWARE MMX1406M09MSC-1 is a male-male hex circuit board standoff designed to create precise spacing between PCBs and mounting surfaces in electronic assemblies. Threaded M4 x 0.7 on both ends, this standoff measures 5.5 mm overall length with a hex body width across flats of 5 mm, allowing secure torquing with standard hex tools. It is manufactured from Grade 18-8 303 stainless steel with a passivated finish, meeting QQ-S-763 fastener standards. Electronics technicians, control board assemblers, and field service techs who work with HVAC control boards, VFDs, and similar panel-mounted electronics will encounter this hardware type regularly.

This standoff is suited for metric-threaded PCB mounting applications in both commercial and residential electronic control assemblies. Its male-male thread configuration allows a board to be stacked or elevated from a chassis or secondary board using a single fastener on each end. Thread length ranges across 8.5 mm, 9 mm, and 9.5 mm engagement options, giving installers flexibility across varying panel thicknesses and board stack heights. Typical applications include control board mounting in HVAC equipment, electrical enclosures, and industrial panels.

Key Features

• M4 x 0.7 male threads on both ends for metric PCB and chassis mounting
• 5.5 mm overall length with length tolerance of -0.150 mm to 0.150 mm
• Hex body at 5 mm width across flats for tool-assisted installation and removal
• Grade 18-8 303 stainless steel construction with passivated finish for corrosion resistance
• Meets QQ-S-763 fastener standard
• Thread length options of 8.5 mm, 9 mm, and 9.5 mm for versatile engagement depth

Compatibility

Designed as an OEM-style metric standoff for circuit board mounting applications requiring M4 x 0.7 threading in hex-body male-male configurations.

Installation Notes

Installation is typically performed by electronics technicians or control board service professionals. De-energize all equipment and discharge any stored capacitance before handling circuit boards or replacing standoffs. Use an appropriately sized hex driver or wrench sized for 5 mm across flats to seat the standoff without overtorquing and damaging the board substrate. Verify thread engagement length is appropriate for the mating board thickness before final assembly.