Electro Hardware ESO-6440-14ZI Hex Standoff 4-40 25 Pack

Product Description

The ELECTRO HARDWARE ESO-6440-14ZI is a female hex circuit board standoff designed to mount and space printed circuit boards within enclosures and electronic assemblies. This standoff uses a 4-40 thread size and measures 0.437 inches in overall length with a 0.25 inch width across flats on its hexagonal body. Constructed from steel with a zinc-plated finish, it provides corrosion resistance suitable for indoor electronic and control panel applications. Installation uses a self-clinching with through-hole fastening method, allowing secure attachment without additional hardware on the board side. Sold in packages of 25 units.

This standoff is used in residential and commercial electronic control panel assemblies, HVAC control board mounting, and general PCB spacer applications. The female thread accepts a male 4-40 screw from the mating component, making it well suited for stacking boards or securing a board to a chassis at a fixed standoff height. Licensed electricians, electronics technicians, and HVAC controls technicians typically install these during panel builds or control board replacement work.

Key Features

• Female 4-40 thread for accepting mating screws or threaded fasteners
• Hex body profile at 0.25 inch width across flats for wrench or socket installation
• 0.437 inch overall length provides precise board spacing
• Steel construction with zinc plating for corrosion resistance in indoor environments
• Self-clinching with through-hole fastening method for secure PCB attachment
• Sold in packs of 25 to support panel builds and multi-board assemblies

Compatibility

Designed as an OEM-style replacement or standard hardware component for circuit board mounting applications requiring a 4-40 female hex standoff with 0.437 inch overall length.

Installation Notes

Installation is typically performed by licensed electricians or electronics technicians during control panel assembly or circuit board service. Always de-energize and lock out the equipment before working inside any enclosure. Use an appropriately sized wrench or socket matching the 0.25 inch hex flats to seat the standoff securely without overtightening. Follow applicable NEC guidelines for control panel wiring and assembly practices.