Electro Hardware ESOS-440-14 Hex Standoff 4-40 Ss 25-pack

Product Description

The ELECTRO HARDWARE ESOS-440-14 is a female hex circuit board standoff designed to mount and space printed circuit boards within enclosures, control panels, and electronic assemblies. Manufactured from grade 303 stainless steel with a passivated finish, this standoff resists corrosion and is suitable for environments where surface contamination must be minimized. It features a 4-40 female thread, an overall length of 0.437 inches, and a hex body width across flats of 0.187 inches. The fastening method is self-clinching with a through hole, allowing secure installation directly into sheet metal panels. This hardware is sold in packages of 25 and is sized for use in precision electronic assemblies across HVAC controls, electrical equipment, and industrial applications.

This standoff is used wherever circuit boards require rigid, elevated mounting within a chassis or panel. Common applications include residential and commercial HVAC control board assemblies, electrical enclosures, and industrial electronics. The 4-40 thread size is a standard inch-series fastener size widely used in light-gauge sheet metal assemblies. The passivated stainless steel construction makes it appropriate for applications requiring clean, low-contamination hardware. Installation is straightforward for technicians working in panel fabrication, board assembly, or field replacement of control board mounting hardware.

Key Features

• 4-40 female thread for standard inch-series board mounting
• Hex body profile at 0.187 inches width across flats for wrench or driver engagement
• 0.437 inches overall length provides consistent board standoff height
• Grade 303 stainless steel construction for corrosion resistance
• Passivated finish minimizes surface contamination in sensitive electronic environments
• Self-clinching through-hole fastening method for secure panel installation

Compatibility

Designed as a standard 4-40 inch-series female hex standoff for use in circuit board mounting applications across electronic enclosures, control panels, and equipment requiring self-clinching hardware in sheet metal assemblies.

Installation Notes

Installation of self-clinching standoffs typically requires a press or squeezing tool to properly seat the standoff into the parent sheet metal panel — do not attempt installation with a hammer, as this can deform the standoff or panel. Power down all circuits and discharge any stored energy before working inside control panels or enclosures. Verify thread engagement and panel material compatibility before pressing. A licensed electrician or qualified panel fabricator should perform installation in line-voltage enclosures subject to NEC requirements.