Electro Hardware MMX1402M12MSC-1 Hex Standoff M4

Product Description

The ELECTRO HARDWARE MMX1402M12MSC-1 is a male-male hex circuit board standoff designed to create fixed spacing between PCBs and chassis surfaces or between stacked boards. The standoff features an M4 x 0.7 thread size on both ends and a hexagonal body that accepts a wrench for secure installation. Overall length is 3.5 mm with a body length of 3.5 mm and thread lengths of 8.5, 9, or 9.5 mm depending on configuration. It is manufactured from Grade 2 steel with a zinc-plated finish that meets QQ-S-633 standards. Electronics assembly technicians, field service techs, and panel builders use this type of fastener in control board mounting applications across HVAC, electrical, and industrial equipment.

This standoff is suited for metric-threaded circuit board assemblies where a rigid male-to-male connection point is needed. Typical applications include mounting control boards inside HVAC equipment enclosures, electrical panels, and industrial control cabinets. The hex body allows installation with standard open-end or box wrenches, making it practical for both bench assembly and in-field board replacement. Its compact 3.5 mm overall length fits tight board stacking arrangements where minimal standoff height is required.

Key Features

• M4 x 0.7 thread on both male ends for metric board mounting
• Hexagonal body at 5 mm width across flats for wrench engagement
• 3.5 mm overall length suits tight PCB stacking clearances
• Grade 2 steel construction with zinc-plated finish for corrosion resistance
• Meets QQ-S-633 fastener standard
• Length tolerance of -0.15 to 0.15 mm for consistent fit

Compatibility

Designed as a standard metric male-male hex standoff for use in M4-threaded circuit board mounting applications across control panel and PCB assembly work.

Installation Notes

Installation is typically performed by electronics assembly technicians or licensed electricians during control board mounting or replacement. Power down and de-energize the equipment fully before working inside any enclosure. Use an appropriate metric wrench or hex driver on the 5 mm flats to drive the standoff without deforming the body. Follow applicable NEC or equipment-manufacturer guidelines for fastener torque and board clearance requirements.