Electro Hardware P537M06F16-440 Female Hex Standoff 4-40

Product Description

The ELECTRO HARDWARE P537M06F16-440 is a female hex circuit board standoff designed to create precise, stable spacing between PCBs and mounting surfaces in electronic assemblies. Machined from aluminum alloy with an anodized finish, this standoff accepts a 4-40 threaded fastener and provides a 0.625 inch overall length with a 1/4 inch hex body width across flats. The hex body profile allows for wrench installation and removal, making it well-suited for panel builds, control boards, and enclosure assemblies where repeatable spacing and secure thread engagement are required. It is typically installed by electronics assemblers, electricians, and HVAC or control-panel technicians.

This standoff is used in residential and commercial control panel construction, HVAC circuit board mounting, electrical enclosure assembly, and general electronics fabrication wherever a female-to-male 4-40 threaded spacing solution is needed. The aluminum body keeps weight minimal while providing adequate mechanical strength for board-level fastening applications. The anodized bright finish adds corrosion resistance, making it suitable for both indoor and light-duty industrial environments.

Key Features

• Female 4-40 thread accepts standard 4-40 machine screws for secure board attachment
• 0.625 inch overall length provides consistent standoff height between stacked boards or mounting surfaces
• Hex body profile at 0.25 inch width across flats enables wrench or nut-driver installation
• Aluminum construction with anodized bright finish for corrosion resistance and lightweight performance
• Meets QQ-A-225A Comp 2 material standard, Grade T-3 aluminum
• Length tolerance of -0.005 to 0.005 inch ensures dimensional consistency across assemblies

Compatibility

Designed as a standard female hex PCB standoff for use in control board and panel assemblies requiring a 4-40 thread and 5/8 inch standoff height.

Installation Notes

Installation is performed using a appropriately sized hex wrench or nut driver sized to 1/4 inch across flats. Always de-energize and discharge any circuit board assembly before installing or removing standoffs to prevent component damage or shock hazard. Do not overtighten, as aluminum threads can strip under excessive torque. Follow the enclosure or board manufacturer's fastener torque guidelines where specified.