Electro Hardware MMF1813M09F16M4 Hex Standoff M4x0.7

Product Description

The ELECTRO HARDWARE MMF1813M09F16M4 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, allowing modular board assembly at a fixed height. Manufactured from grade 303 stainless steel with a bright uncoated finish, this standoff meets the QQ-S-763 federal specification for stainless steel fasteners. Overall length is 20.53 mm, body length is 11.00 mm, and thread length on the male end is 9.53 mm. The hexagonal body measures 6.00 mm across flats, allowing standard hex tooling for installation and removal.

This standoff is used in electronics assembly, control board mounting, and enclosure builds where M4 metric threading is specified. Typical applications include HVAC control board assemblies, industrial panel wiring, and any application requiring a secure, corrosion-resistant spacer between circuit boards or between a board and a chassis panel. The metric M4 x 0.7 thread pitch is a common standard in commercial and industrial electronics, making this standoff a reliable choice for OEM assembly and field repair work alike.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 federal fastener specification
• M4 x 0.7 metric thread on both male and female ends for modular board stacking
• Hexagonal body at 6.00 mm across flats accepts standard hex drivers and wrenches
• Bright uncoated finish preserves dimensional tolerances and resists corrosion
• Length tolerance of -0.150 mm to 0.150 mm ensures consistent board spacing
• Overall length of 20.53 mm with an 11.00 mm body length for predictable standoff height

Compatibility

Designed as a standard M4 x 0.7 metric male-female hex standoff suitable for PCB assemblies, control panels, and electronics enclosures that specify M4 metric hardware.

Installation Notes

Installation is typically performed by electronics technicians or qualified control board service personnel. De-energize all circuits and discharge any stored energy before working on or near circuit boards. Use a hex driver or open-end wrench sized to 6.00 mm across flats to avoid rounding the standoff body. Do not overtighten, as stainless fasteners can gall if excessive torque is applied without lubrication.