Electro Hardware MMF1315M09F16M3 Hex Standoff M3x0.5

Product Description

The ELECTRO HARDWARE MMF1315M09F16M3 is a male-female hex circuit board standoff designed to create precise spacing between stacked PCBs or between a circuit board and a mounting surface. The male end threads into a mating female receptacle or nut, while the female end accepts the next fastener in the stack. Machined from 303 stainless steel with a bright uncoated finish, this standoff meets QQ-S-763 material standards. The overall length is 16.76 mm, the hex body measures 12.00 mm, and the width across flats is 4.50 mm. Electronics assembly technicians and field service techs working on control boards in HVAC, industrial, and electrical enclosure applications routinely use this style of hardware.

This standoff is used in metric fastener applications requiring M3 x 0.5 threading. It suits residential and commercial control board assemblies, DIN rail-mounted electronics, and enclosure panel builds where consistent board-to-board or board-to-chassis spacing is required. The hex body allows wrench engagement for torque-controlled installation without marring adjacent components. Its stainless steel construction makes it suitable for environments with moderate moisture exposure or where ferrous hardware is not acceptable.

Key Features

• Male-female hex configuration allows modular PCB stacking with a single fastener type
• M3 x 0.5 thread size on both ends for metric assembly compatibility
• 303 stainless steel construction meets QQ-S-763 fastener standard
• Bright uncoated finish - no coating thickness to account for in precision assemblies
• 4.50 mm width across flats accepts standard metric hex drivers and wrenches
• Length tolerance of -0.150 to 0.150 mm for consistent stack height in multi-board builds

Compatibility

Designed for metric M3 x 0.5 threaded circuit board assemblies. Suitable as a standard hex standoff in any PCB mounting application specifying M3 male-female stainless steel hardware with a 4.50 mm hex body.

Installation Notes

Installation is typically performed by electronics assembly technicians or field service personnel working on control board enclosures. De-energize all equipment and discharge any capacitors before handling circuit boards. Use a metric hex wrench or nut driver sized to 4.50 mm across flats to engage the body. Avoid over-torquing - thread stripping on M3 fasteners is a common failure mode when using power tools without torque limiting.