Electro Hardware P293M12F21440 Hex Standoff 4-40 1/4in

Product Description

The ELECTRO HARDWARE P293M12F21440 is a female hex circuit board standoff designed to space and secure printed circuit boards within electronic enclosures and control panels. 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 thread and measures 1/4 inch in overall length with a 3/16 inch width across the hex flats. The fully threaded female interior runs the full 1/4 inch thread depth. It is installed by HVAC controls technicians, electricians, and electronics assembly professionals during control board mounting and panel fabrication work.

This standoff is suited for residential and light commercial control panel assemblies where compact board spacing is required. The 4-40 thread size is common in low-voltage control board applications, HVAC control panel enclosures, and general electronics chassis work. The hex body shape allows wrench or nut driver installation, making it practical for confined board layouts where finger tightening is not sufficient.

Key Features

• Female fully threaded interior with 4-40 thread size and 1/4 inch thread depth
• Hex body shape accepts standard nut driver or wrench for secure installation
• Steel construction with clear zinc chromate finish for corrosion resistance
• Meets ASTM B633 Type 1 and QQ-S-633 finish standards
• Compact 1/4 inch overall length suits tight board-to-panel spacing requirements
• Length tolerance of -0.005 to 0.005 inch for consistent stacking height

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board mounting applications requiring a 4-40 female threaded hex standoff with 1/4 inch overall length.

Installation Notes

Installation is performed by qualified HVAC technicians or electricians during control board replacement or panel assembly. De-energize all circuits and discharge any capacitors before working inside a control enclosure. Use a correctly sized nut driver or hex wrench on the flats to avoid rounding the hex body. Follow applicable NEC guidelines for control panel wiring and fastener requirements when reassembling enclosures.