Fractional Sizes Cup Point Brass Socket Set Screws

Brass Cup Point Socket Set Screws for Precision, Non-Magnetic Fastening

Brass cup point socket set screws are specialized fasteners engineered for precision applications that require a secure hold without damaging delicate components. Manufactured from solid brass, these set screws offer a unique combination of corrosion resistance, non-magnetic properties, and electrical conductivity, making them an ideal choice for electronics, marine equipment, instrumentation, and decorative hardware.

Cup Point Design with Gentle Holding Power

The cup point features a concave tip that provides controlled gripping action against the mating surface. Unlike harder steel fasteners, brass cup point set screws bite gently into materials without excessive marking or deformation. This makes them especially effective for securing shafts, knobs, collars, and rotating parts made from softer materials such as aluminum, copper, brass, or plastic. The result is dependable holding power with reduced risk of surface damage.

Brass Material Advantages

Solid brass construction delivers natural resistance to corrosion and oxidation, even in humid or marine environments. Unlike steel fasteners, brass does not rust, making it suitable for long-term exposure to moisture. Brass is also non-magnetic and offers excellent thermal and electrical conductivity, which is critical in electrical assemblies, grounding applications, and low-voltage connections.

Socket Drive for Precise Installation

Brass cup point socket set screws use an internal hex (socket) drive, allowing for precise torque control during installation. This design enables secure tightening in recessed or space-limited locations using standard hex keys, while maintaining a clean, flush appearance.

Manufacturing Standards and Size Availability

These set screws are produced to ASME B18.3 or equivalent DIN standards, ensuring dimensional accuracy and consistent performance. Brass cup point socket set screws are available in a wide range of fractional and metric sizes, commonly from #4-40 through 1/2-13, to suit a variety of applications.

Common Applications

Electronics and electrical assemblies

Marine and coastal equipment

Instrumentation and control systems

Decorative and antique hardware

Light mechanical and precision components

Key Benefits of Brass Cup Point Set Screws

Non-magnetic and corrosion-resistant

Gentle grip for soft or delicate materials

Excellent electrical and thermal conductivity

Flush installation with internal hex drive

Attractive natural brass appearance

For precision fastening that combines conductivity, corrosion resistance, and surface protection, brass cup point socket set screws deliver reliable performance in sensitive and visible applications.