The ASSA^® 5-Pin Cylinder combines strength and reliability with a pin tumbler operation. A series of 5 pin tumblers provide strong pick resistance and extensive master keying capabilities. The heavy duty brass cylinder is designed to provide lasting durability.

With the ASSA^® Desmo Precision Drive™ System, locking pins are moved mechanically by the side cuts on the key. Once all the pins are properly aligned, they create two channels for locking side bars, which interlock the cylinder housing and inner cylinder. As the key turns the inner cylinder, the side bars are forced into the unlocked position, which allows the cylinder to turn. As the lock is operated, the side bar pins hold the key in place. This minimizes wear on the key and the pins. As the key is withdrawn in the locked position, the side bar pins mechanically force the side bars into the locked position. This provides a clear path for key removal.