Electro Hardware P625M04F16-440 Female Standoff 4-40

Product Description

The ELECTRO HARDWARE P625M04F16-440 is a round female standoff designed for use in panel assembly, electronics enclosures, and structural fastening applications where precise spacing and secure threading are required. Machined from aluminum to the T-3 material grade and finished with a bright anodized coating, this standoff measures 2 inches in overall length with a 1/4 inch outside diameter. The internal thread runs 4-40 and is fully threaded to a 1 inch depth, providing reliable engagement for standard machine screws. It meets the QQ-A-225A Comp 2 fastener standard, making it suitable for applications where material and dimensional compliance are specified.

This standoff is commonly used in electronics chassis assembly, circuit board mounting, rack-mounted equipment, and light-duty structural spacing applications. It is appropriate for residential control panel work, commercial electrical enclosures, and instrumentation builds where aluminum construction is preferred for its corrosion resistance and light weight. Installation is typically performed by electricians, electronics technicians, or mechanical assemblers working with standard inch-series fastener systems.

Key Features

• Fully threaded female interior with 4-40 thread size and 1 inch thread depth
• Aluminum construction to T-3 material grade for lightweight, corrosion-resistant performance
• Bright anodized finish for surface protection and clean appearance
• Round body profile with 1/4 inch outside diameter and 2 inch overall length
• Meets QQ-A-225A Comp 2 fastener standard for dimensional and material compliance
• Length tolerance held to -0.005 to 0.005 inches for precise spacing

Compatibility

Designed as an OEM-style replacement or direct-use component for applications requiring a 4-40 threaded, 2 inch aluminum female standoff in inch-measurement fastener systems.

Installation Notes

Installation is performed by hand or with standard hex drivers and appropriate 4-40 machine screws. Ensure mating screws do not exceed the 1 inch thread depth to avoid bottoming out and stripping the internal threads. Torque should be applied carefully, as aluminum threads are more susceptible to galling and over-torque damage than steel. Disconnect power to any assembly before installing or removing standoffs in live electrical enclosures.