Electro Hardware MP1031M03F21M3 Hex Board Standoff M3

Product Description

The ELECTRO HARDWARE MP1031M03F21M3 is a female hex circuit board standoff designed to create precise spacing and secure mounting between printed circuit boards and chassis panels or stacked PCB assemblies. Manufactured from brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff delivers reliable conductivity and corrosion resistance in electronic enclosures. The metric M3 x 0.5 female thread runs the full 16 mm body length, providing maximum thread engagement for secure fastener retention. The hexagonal body profile measures 6 mm width across flats, allowing standard hex drivers or wrench tightening without slippage during installation.

This standoff is suited for use in control boards, HVAC equipment electronics, industrial enclosures, and any application requiring stable PCB mounting with consistent board-to-board or board-to-chassis clearance. Electricians, controls technicians, and electronics assembly professionals install this type of hardware when mounting control boards inside equipment panels or when servicing replacement boards that require standoff hardware not included with the replacement part. The fully threaded 16 mm depth accommodates a range of fastener lengths and simplifies assembly in tight enclosures.

Key Features

• Fully threaded female M3 x 0.5 thread with 16 mm thread depth for maximum fastener engagement
• Hexagonal body at 6 mm width across flats allows wrench or hex driver installation
• Brass construction with zinc-plated finish for corrosion resistance and electrical continuity
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 finish standards
• Length tolerance of -0.13 to 0.13 mm ensures consistent board spacing in precision assemblies
• Metric dimensioning compatible with M3 fastener hardware commonly used in electronic and HVAC control assemblies

Compatibility

Designed as a metric M3 x 0.5 female hex standoff for use in PCB mounting and circuit board assembly applications where brass construction and zinc-plated finish are specified.

Installation Notes

Install and remove using a 6 mm hex wrench or nut driver to avoid rounding the hex body. De-energize all equipment and discharge any capacitors before servicing control boards or handling standoff hardware inside live panels. Follow applicable electrical codes and equipment manufacturer guidelines when replacing or adding PCB mounting hardware inside enclosures. Avoid over-tightening, as brass threads can be damaged by excessive torque applied with power tools.