Electro Hardware MMF1841M06F16M4 Hex Standoff M4x0.7

Product Description

The ELECTRO HARDWARE MMF1841M06F16M4 is a male-female hex circuit board standoff machined from aluminum alloy to metric M4 x 0.7 thread specifications. It provides a rigid, electrically isolated column between stacked PCBs or between a board and a chassis, maintaining precise spacing while offering a threaded male post on one end and a threaded female receptacle on the other. The overall length is 34.53 mm (approximately 1.36 inches), with a body length of 25.00 mm and a 6 mm hex profile across flats for wrench engagement. Material grade is T3 aluminum, uncoated bright finish, and the fastener meets QQ-A-225A Comp 2 standard. This standoff weighs approximately 0.005 pounds per piece.

This standoff is used in PCB assembly, electronic enclosure builds, and control board mounting across industrial, commercial, and residential equipment. Typical applications include mounting logic boards, relay boards, and control panels inside HVAC equipment enclosures, electrical panels, and similar assemblies where metric hardware is specified. The male-female configuration allows standoffs to be daisy-chained or terminated with a mating screw, making it suitable for both single-board mounts and multi-board stacking arrangements. Electronics assembly technicians and field service technicians working on metric-spec equipment will encounter this fastener type regularly.

Key Features

• M4 x 0.7 thread on both male and female ends for standard metric compatibility
• Hex body profile at 6 mm across flats allows installation with standard hex wrench or nut driver
• 34.53 mm overall length with 25.00 mm body length provides consistent PCB-to-PCB or PCB-to-chassis spacing
• T3 aluminum construction keeps weight low while providing adequate thread strength for circuit board mounting loads
• Bright uncoated finish meets QQ-A-225A Comp 2 fastener standard
• Length tolerance of -0.150 to 0.150 mm supports precise stack height control in tight enclosures

Compatibility

Designed as a metric M4 x 0.7 male-female hex standoff for use in any application requiring QQ-A-225A Comp 2 aluminum fasteners at this thread size and body length.

Installation Notes

Electronic assembly technicians should de-energize all equipment and discharge any capacitive circuits before installing or removing circuit board standoffs. Use a properly sized hex wrench or nut driver on the 6 mm flats to avoid rounding the body. Do not overtighten - aluminum threads in this size range are susceptible to stripping under excess torque. Follow applicable equipment manufacturer guidelines and any relevant electrical codes when mounting control boards inside enclosures.