Slotted Shoulder Screw

As an expert with 19 years of experience in the fastener industry, I frequently encounter customers asking: how to choose a reliable, durable shoulder screw suitable for their application?

Our Slotted Shoulder Screw is made of high-quality stainless steel and designed for industrial applications, offering superior strength, corrosion resistance, and long-term stability. With its multi-stage shoulder design and slotted head, this shoulder screw is suitable for a wide range of applications, including machinery manufacturing, construction, automotive, electronics, and furniture hardware, making it the preferred fastener for reliable connections.

Product Features

1. High-Strength Stainless Steel Material

Our slotted shoulder screws are made of industrial-grade A2 stainless steel, providing excellent mechanical properties and long-term stability.

Strength and Hardness

Made of high-quality stainless steel, the screws can withstand shear and tensile forces up to hundreds of kilograms, ensuring stable connections in high-load or high-vibration machinery.

Corrosion Resistance

The material is naturally corrosion-resistant and rust-proof, maintaining its integrity even in humid, marine, acidic, alkaline, or chemically corrosive environments, eliminating the need for frequent replacements.

Application Examples

Offshore wind turbine bracket fastening, resisting salt spray corrosion

Chemical plant equipment casing fixing, resisting acid and alkali corrosion

Industrial robot bearing positioning, bearing dynamic loads for extended periods

2. Slotted Head Design, Easy Installation and Maintenance

The slotted head design makes installation and disassembly simple and efficient, requiring no special tools.

Easy Installation

Compatible with standard flathead screwdrivers or electric screwdrivers, enabling rapid batch assembly and improving production efficiency.

Easy Disassembly and Maintenance

For equipment requiring frequent maintenance, debugging, or replacement, the slotted head design significantly shortens disassembly time and reduces labor costs.

Application Examples

Rapid assembly and disassembly of factory production line modules

Regular maintenance and parts replacement for mold equipment

Electronic equipment debugging and trial assembly stages

3. Multi-stage Shoulder Design for Sturdy Reliability

The shoulder is the core advantage that distinguishes shoulder screws from ordinary screws, especially irreplaceable in high-precision assembly.

Positioning and Load-Bearing Capacity

The shoulder diameter is larger than the thread portion, allowing for precise positioning of parts while sharing some shear force, preventing excessive stress on the thread.

Multi-stage Design

Multi-stage shoulders can adapt to different hole diameters or gaps, improving assembly compatibility and enhancing part fit, reducing loosening caused by vibration.

Application Examples

Mechanical bearing fixing, with the shoulder ensuring axial positioning.

Industrial slide rail assembly, with the shoulder supporting sliding components.

Precise positioning of automotive parts, such as interior trim brackets and supports.

4. Precision Machining and Optional Surface Treatments

High-Precision Machining

The shoulder and threads are precision machined and tolerance-controlled to ensure a tight, wobble-free fit during installation, improving the overall mechanical stability of the system.

Thread Treatment

Threads are rolled or turned to improve tensile strength and cycle life, ensuring smooth installation even after prolonged use.

Optional Surface Treatments

Passivation, nickel plating, electropolishing, black anodizing, and other treatments meet different environmental and aesthetic requirements while enhancing corrosion resistance.

Application Examples

High-precision instrument fastening

Medical equipment component assembly

High-end furniture slide rails and decorative structural components

Contact now

With 18 years in the fastener industry, Zeyao Hardware specializes in manufacturing custom fasteners, including screws, bolts, nuts, and more. We offer tailored solutions to meet your specific needs, ensuring high-quality, reliable products every time.