Ball Lock Pins: Secure and Quick Fastening for Industrial Fixtures

In modern manufacturing, speed, safety, and precision are critical—especially when equipment or fixtures need to be repositioned or replaced often. That’s where the Ball Lock Pin shines.

Also known as a Quick Release Ball Lock Pin, this fastener allows for fast locking and unlocking of components without tools, while maintaining secure, repeatable connections.

In this guide from Dongguan Sango Hardware Fasteners Co., Ltd., you’ll learn everything you need to know about ball lock pins—from how they work to how to select the right type for your industrial applications.

1. What Is a Ball Lock Pin?

A Ball Lock Pin is a type of quick-release pin that uses one or more spring-loaded locking balls near the tip of the shaft. These balls expand to hold the pin in place after insertion and retract when a push-button or pull-ring is activated.

🔩 Main Features:

• One-handed operation
• High retention force with easy release
• Fast installation and removal
• Reliable for repeated use
• Tool-free locking in tight tolerances

2. Common Types of Ball Lock Pins

🔹 Push-Button Ball Lock Pin

• Press button to retract locking balls
• Automatically locks when inserted
• Used in jigs, assembly fixtures, changeover systems

🔹 T-Handle Ball Lock Pin

• Easier grip for heavy-duty or gloved-hand environments
• Often used in fitness machines, aerospace tooling

🔹 Ring Pull Ball Lock Pin

• Ideal for compact areas or angled access
• Pull to retract balls; insert and release to lock

🔹 Double Ball Lock Pin

• Enhanced holding force and vibration resistance
• Suitable for industrial robotics and large equipment

🔹 Stainless Steel Ball Lock Pin

• Corrosion-resistant (SUS304 / SUS316)
• Suitable for marine, medical, outdoor, or food-grade uses

3. Where Are Ball Lock Pins Used?

Ball lock pins are vital in industries requiring frequent tool changes, adjustable fixtures, or modular systems:

• ⚙️ Machinery and modular equipment
• 🧰 Workholding fixtures / jigs / clamps
• 🏋️ Gym equipment and weight selector systems
• 🚀 Aerospace ground support systems
• 🔁 Automated production lines and robot end-effectors
• 🧪 Testing devices and lab rigs

4. Key Advantages

✅ Speed: Swap components in seconds

✅ Safety: Lock automatically to prevent accidental release

✅ Precision: Maintain consistent positioning tolerances

✅ Durability: Designed for thousands of cycles

✅ Versatility: Customizable heads, sizes, materials

5. How to Choose the Right Ball Lock Pin