Electro Hardware MP1025M03F21M4 Female Hex Standoff M4

Product Description

The ELECTRO HARDWARE MP1025M03F21M4 is a female hex circuit board standoff designed to create fixed spacing between circuit boards and mounting surfaces in electronic assemblies. Machined from brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides reliable electrical isolation and structural support. The M4 x 0.7 fully threaded female bore runs the entire 13 mm overall length, allowing a mating male fastener to engage from either end. The hexagonal body measures 6 mm across flats, making it wrench-accessible for installation in tight PCB layouts. Electronics assemblers, field service technicians, and panel builders use this hardware in control boards, enclosures, and rack-mounted equipment.

This standoff is suited for metric PCB assemblies in both commercial and industrial applications where consistent board standoff height and secure mechanical attachment are required. Typical use cases include HVAC control board assemblies, electrical panel sub-assemblies, and industrial equipment where a fully threaded female standoff must accept an M4 x 0.7 screw from the board side. The fully threaded bore and brass construction make it appropriate where mild corrosion resistance and electrical conductivity through the standoff are needed.

Key Features

• M4 x 0.7 fully threaded female bore with 13 mm thread depth for full-length engagement
• 13 mm overall length provides consistent, measurable board standoff height
• Hexagonal body at 6 mm across flats allows installation and removal with standard hex wrenches or nut drivers
• Brass construction with zinc-plated finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Length tolerance held to plus or minus 0.13 mm for precise stack-up control in multi-board assemblies
• Metric thread system for compatibility with M4 hardware used in modern electronic and control equipment

Compatibility

Designed as an OEM-style replacement or new-build component for metric PCB assemblies requiring M4 x 0.7 female hex standoffs with a 13 mm overall length and 6 mm hex body.

Installation Notes

Power down and de-energize any control board or panel before installing or removing standoffs to prevent short circuits or component damage. Use an appropriately sized hex wrench or nut driver on the 6 mm flats — avoid pliers or gripping tools that can deform the hex body or damage the plating. Thread engagement should be confirmed on both the board-side and chassis-side fasteners before final torque. Follow applicable IPC or equipment manufacturer guidelines for PCB mounting hardware installation.