ANSI/ASME B18.8.2 Coiled Spring Pins

ANSI/ASME B18.8.2 coiled spring pins are designed to compress during installation and expand to fill the hole, creating a tight friction fit that secures components in place. They are widely used in automotive applications where vibration resistance, ease of installation, and flexibility are critical. The ANSI/ASME B18.8.2 standard specifies the dimensions, materials, and performance requirements for these pins, ensuring consistency and reliability across various applications.
Coiled spring pins consist of multiple layers of coiled metal, providing greater strength and load-bearing capacity compared to single-layer slotted pins. This design makes them highly resistant to shear forces and deformation.These pins can be installed with minimal tools, often requiring only a hammer or press. Their ability to compress during installation reduces the need for precise machining of holes, simplifying assembly and reducing costs.
Common materials include carbon steel , stainless steel , and sometimes aluminum . Stainless steel is often used in corrosive environments, while carbon steel provides higher strength for heavy-duty applications.

Designed for Ease of Use:

We prioritize efficiency in your assembly processes. Unlike solid pins, the coiled, multi-layered design of our ANSI/ASME B18.8.2 spring pins allows for effortless installation with minimal tools, often requiring just a simple hammer or an arbor press. This eliminates the need for complex installation procedures and specialized equipment, significantly reducing assembly time and labor costs. Furthermore, their inherent compressibility reduces the necessity for highly precise machining of mating holes, offering greater flexibility in manufacturing tolerances and further simplifying the assembly process. This adaptability is a key advantage in fast-paced automotive assembly lines and general industrial applications where speed and simplicity are paramount.

Key Advantages for Your Applications:

• Reliable Locking Mechanism: Radial compression and expansion create a tight, secure friction fit.
• Exceptional Vibration Resistance: Multi-layered coil design ensures secure holding even under high vibration.
• Effortless Installation & Removal: Designed for quick and simple handling with minimal tooling, reducing assembly time.
• Accommodates Hole Variations: Compressible design reduces the need for tight machining tolerances.
• Versatile Applications: Ideal for securing gears, levers, shafts, pins, and various other components in automotive and industrial machinery.
• Durable Construction: Manufactured from high-quality spring steel, stainless steel, and sometimes aluminum for long-lasting performance and resilience in diverse environments.
• Cost-Effective Solution: Simplifies assembly and reduces the need for precise machining.
• Compliance with ANSI/ASME B18.8.2: Ensures dimensional accuracy, material integrity, and performance reliability.
• High Shear Strength: Multi-layered coil construction provides superior resistance to shear forces.
• Excellent Fatigue Resistance: Engineered to withstand repeated loading and unloading cycles.
• Available in a Range of Sizes and Materials: Carbon steel (offering high strength), stainless steel (ideal for corrosive environments), and aluminum (for weight-sensitive applications) are available across a comprehensive range of diameters and lengths to meet your specific application requirements.

Ideal for:

• Automotive assembly lines (transmissions, engines, chassis)
• Agricultural machinery
• Construction equipment
• Industrial machinery and automation
• Securing gears and sprockets
• Hinge and pivot pin retention
• Vibration-prone environments