Electro Hardware P297M09F16440 Hex Standoff 4-40

Product Description

The ELECTRO HARDWARE P297M09F16440 is a female hex circuit board standoff designed to create precise spacing and secure mechanical connections between PCBs, panels, and enclosures. Machined from 303 stainless steel with a plain (bright/uncoated) finish, this standoff measures 5/16 inches overall length with a 3/16-inch width across flats. The fully threaded female interior accepts a 4-40 thread with a 5/16-inch thread depth, providing reliable thread engagement in compact board-level assemblies. Electronics technicians, electrical contractors, and panel builders rely on standoffs like this to maintain proper clearance and grounding separation in control panels and printed circuit board installations.

This standoff is suited for use in residential and commercial electrical enclosures, HVAC control boards, industrial panel assemblies, and any application requiring a small-profile, corrosion-resistant PCB spacer. The hex body allows for tool-assisted installation and removal in tight spaces. Its inch-system dimensions align with standard 4-40 fastener hardware commonly found in domestic control board and electronics assembly work.

Key Features

• Female hex body accepts 4-40 threaded fasteners for secure board-to-board or board-to-panel mounting
• Fully threaded interior with 5/16-inch thread depth for maximum thread engagement in a compact form factor
• 303 stainless steel construction provides corrosion resistance and long service life in humid or outdoor-rated enclosures
• Plain (bright/uncoated) finish meets QQ-S-763 fastener standards
• Hex body shape allows wrench or nut-driver installation without fastener slippage
• Inch-system sizing (4-40 thread, 5/16-inch OAL) integrates directly with standard domestic PCB hardware

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies using 4-40 inch-series threaded fasteners in residential and commercial control panels and electronics enclosures.

Installation Notes

Installation is performed by electronics technicians or electricians during control board assembly or panel build-out. Always de-energize the equipment and follow lockout/tagout procedures before working on or near live control boards. Use an appropriately sized hex wrench or nut driver sized to the 3/16-inch width across flats to avoid rounding the hex body. Apply only hand-tight to snug torque consistent with 4-40 stainless fastener guidelines to prevent thread galling in the stainless material.