Electro Hardware MMF1807M09F16M4 Hex Standoff M4x0.7

Product Description

The ELECTRO HARDWARE MMF1807M09F16M4 is a male-female hex circuit board standoff designed to create fixed separation between stacked PCBs or to mount a circuit board to a chassis. The male end threads into a tapped hole or nut on one side while the female end accepts the mating fastener on the opposite side. Machined from 303 stainless steel with a bright, uncoated finish and conforming to the QQ-S-763 fastener standard, this standoff provides corrosion resistance and consistent dimensional accuracy. Overall length is 17.53 mm with a body length of 8.00 mm and an M4x0.7 thread size. Electronics assembly technicians, PCB integrators, and panel builders install this hardware during board-level assembly in both commercial and industrial applications.

This standoff is used in circuit board assembly where controlled board-to-board or board-to-chassis spacing is required. The hex body shape allows installation and removal with standard hex drivers or nut drivers, making it well suited for production line assembly as well as field-service panel work. The M4x0.7 metric thread is a common pitch in electronics enclosures, industrial control panels, and test equipment chassis. The 6.00 mm width across flats is compatible with standard M4 hex tooling.

Key Features

• Male-female configuration allows stacking of multiple PCBs or chassis mounting in a single fastener
• M4x0.7 metric thread for compatibility with standard M4 hardware
• 303 stainless steel construction conforms to QQ-S-763 for corrosion resistance and machinability
• Bright, uncoated finish maintains close dimensional tolerances
• Hex body shape (6.00 mm across flats) enables installation with standard nut drivers or hex keys
• Length tolerance of -0.150 to 0.150 mm supports precise board spacing

Compatibility

Designed as a standard metric M4x0.7 male-female hex standoff for use in circuit board assemblies, electronics enclosures, and industrial control panels requiring M4 metric hardware.

Installation Notes

Installation is typically performed by electronics assembly technicians or panel builders using a standard hex driver or nut driver sized for 6.00 mm across flats. Power down and de-energize all boards and enclosures before installing or removing standoffs. Avoid overtightening, as stainless steel fasteners can gall if driven beyond hand-tight without lubrication. Follow equipment manufacturer torque guidelines where specified in the assembly documentation.