Diamond American Standard Roller Chain Full Lock Spare (D12101)

The D12101 Full Lock Spare is designed specifically for 3/4 inch pitch (D121 series) single-strand roller chains, offering a solid and dependable locking mechanism that keeps your chain securely connected under high loads and continuous motion.

Engineered with precision and built from premium-grade materials, this full lock spare ensures strong resistance against wear, vibration, and corrosion. It plays a critical role in maintaining the structural integrity and performance of roller chains in a wide range of mechanical and industrial applications such as conveyor systems, gear drives, and power transmission equipment.

This locking link is easy to install and replace, making it a convenient and essential component for maintenance, repair, or chain extension tasks.

Key Features:

• Suitable for 3/4″ pitch single-strand roller chains (D121 series)

• Delivers tight, vibration-resistant locking

• Constructed for heavy-duty applications

• Offers excellent durability and anti-corrosion properties

• Ideal for industrial, mechanical, and conveyor systems

For dependable chain operation and long-term system stability, the D12101 Full Lock Spare is an essential solution trusted in high-performance environments.