Electro Hardware P297M19F16440 Hex Standoff 4-40 Nylon

Product Description

The ELECTRO HARDWARE P297M19F16440 is a female hex circuit board standoff designed to create fixed spacing between printed circuit boards and mounting surfaces. The standoff features a 4-40 internal thread, a fully threaded body with a 5/16-inch thread depth, and a hex body shape measuring 3/16 inches across flats. Overall length is 5/16 inches. Molded from nylon with a plain, uncoated finish, this fastener is lightweight, non-conductive, and corrosion-resistant. It is manufactured to MIL-P-17091B standards, making it suitable for applications where dimensional and material consistency is required. Electronics technicians, PCB assemblers, and field service professionals working on control boards across HVAC, electrical, and industrial equipment commonly use this part.

This standoff is used in PCB assemblies where boards must be secured at a defined height above a chassis or a secondary board. Typical applications include control board mounting in HVAC equipment, electrical enclosures, and light industrial electronics. Its nylon construction makes it appropriate for environments where electrical isolation between the board and mounting surface is required. The small footprint and 4-40 thread size make it compatible with fine-pitch board layouts common in residential and commercial control modules.

Key Features

• Female 4-40 internal thread, fully threaded through the body
• 5/16-inch overall length and 5/16-inch thread depth for consistent board standoff height
• 3/16-inch hex width across flats for standard hex driver installation
• Nylon construction provides electrical isolation and corrosion resistance
• Plain, uncoated finish with tensile strength of 16,500 psi
• Manufactured to MIL-P-17091B fastener standard

Compatibility

Designed as an OEM-style replacement or new-installation standoff for printed circuit board assemblies using 4-40 thread fasteners and requiring 5/16-inch board-to-surface spacing.

Installation Notes

Installation is performed by electronics technicians or field service professionals using a standard hex driver sized for 3/16-inch across flats. Disconnect and de-energize all equipment before handling circuit boards or removing fasteners. Avoid over-torquing nylon standoffs, as the material is subject to thread stripping under excessive force. Follow applicable NEC guidelines when working inside electrical enclosures or control panels.