Electro Hardware P469M12F21440 Hex Standoff 4-40 3in Steel

Product Description

The ELECTRO HARDWARE P469M12F21440 is a female hex circuit board standoff designed to create precise vertical spacing between stacked PCBs or between a circuit board and a chassis panel. Machined from steel with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-S-633 standards, this standoff accepts a 4-40 threaded fastener on the female end and provides a 1/4-inch thread depth for secure engagement. The overall length is 3 inches with a 3/16-inch width across flats on the hex body. Licensed electricians, electronics technicians, and control board installers use this hardware in panel builds, automation enclosures, and HVAC control assemblies where rigid, repeatable board mounting is required.

This standoff is suited for residential and light commercial electronic assemblies where a 4-40 thread pattern is specified. Common applications include circuit board mounting inside HVAC control panels, electrical enclosures, and industrial equipment. The hex body shape allows installation and removal with standard nut drivers or hex wrenches without marring adjacent components. Its zinc-plated steel construction provides corrosion resistance appropriate for controlled indoor environments.

Key Features

• Female 4-40 thread with 1/4-inch thread depth for positive fastener engagement
• 3-inch overall body length for consistent board-to-board or board-to-chassis spacing
• Hex body at 3/16 inches across flats — compatible with standard nut drivers
• Steel construction with clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-S-633
• Inch-system dimensions for straightforward dimensional verification

Compatibility

Designed as a standard-format female hex standoff for any PCB assembly or enclosure build specifying a 4-40 thread pattern and a 3-inch standoff height in inch-system hardware.

Installation Notes

Installation is performed by electronics technicians or licensed electricians during panel assembly or control board service. Always de-energize the equipment completely before installing or removing circuit board hardware. A standard 3/16-inch nut driver or hex wrench is used to seat the standoff without over-torquing, which can strip the 4-40 thread or crack the PCB substrate. Verify thread engagement depth against the mating fastener length before final assembly.