Yale 6400LN Series Grade 1 Cylindrical Locks

Based on the Yale® 5400LN Grade 1 cylindrical lockset, the 6400LN Monolock continues the tradition of quality and  dependability as a preassembled lock series designed to retrofit existing Yale® Monolock as well as Corbin Russwin Unit Lock and Falcon® Retrofit Lock installations with 1-3/4" latch height.  Featuring a Free Wheeling lever mechanism as an increased deterrent to vandalism, the 6400LN is also ADA compliant and UL listed. As a retrofit lock, installing the 6400LN is a cost-effective alternative to expensive door modification or replacement. In addition, easy installation and the ability to use existing key systems make the 6400LN Monolock convenient and versatile.  As a lock industry leader for over 160 years, Yale has built a reputation on providing the highest level of reliability available in the market. Proven performance is the foundation on which all of our products are manufactured. Our goal at Yale is to provide superior products and services, at a competitive price, on time, every time.

ADA:  The 6400LN meets accessibility guidelines of the Americans with Disabilities Act and the requirements of the Uniform Federal Accessibility Standards and ANSI 117.1, all requiring ease of accessibility for the disabled.

The 6400LN Series Locks are available with MicroShield antimicrobial coating. MicroShield is a revolutionary hardware finish coating, using a silver ion based technology, which inhibits the growth of bacteria, algae, yeast, fungus, mold and mildew. MicroShield is non-toxic and lasts for the lifetime of the finish to which it is applied. To order, suffix option code “YMS”.