Product description

The Snap-On 4 x 20 split pin, also known as a cotter pin, is a simple yet indispensable security fastener for mechanical assemblies. Measuring 4mm in diameter and 20mm in length, this pin is designed to be inserted through a hole in a bolt, shaft, or clevis pin and then bent at the ends to lock it in place. Its primary function is to prevent nuts from backing off or to keep linkage pins from falling out, providing a mechanical failsafe in safety-critical areas like steering joints, brake linkages, and axle nuts. The split design allows for easy installation and permanent deformation, ensuring that the pin stays secure once installed. Made from high-quality steel with a corrosion-resistant finish, this Snap-On split pin is built to endure the elements and the vibrations of daily operation, making it a reliable choice for professional automotive and industrial maintenance.

Product highlights

• Professional-grade 4mm x 20mm split pin (cotter pin) for security.
• Provides a reliable mechanical lock for nuts and clevis pins.
• Easy to install and bend for a permanent, vibration-resistant fit.
• Durable steel construction with a finish that resists rust and corrosion.
• Ideal for automotive steering, braking, and suspension maintenance.

Specs

• Size: 4mm x 20mm
• Manufacturer: Snap-On
• Manufacturer Part Number: ST7023029

Direct replacement models

Snap-On ST7023029

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.