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The KWIKSET 664-15 is a conversion kit designed to convert a single-sided deadbolt between keyed and non-keyed configurations. This kit is compatible with the Kwikset 663 and 664 deadbolt series. It provides a straightforward hardware solution for locksmiths, contractors, and property managers who need to change the function of an installed deadbolt without replacing the full lockset. The satin nickel finish delivers a clean, modern appearance that blends with standard residential door hardware. The kit includes the necessary components to complete the conversion and is suited for interior door applications where a thumb-turn or keyed cylinder swap is required.
This conversion kit is intended for residential door installations using Kwikset 663 and 664 series single-sided deadbolts. It is a practical solution in multi-unit residential properties, rental units, or new construction where door hardware functions need to be adjusted in the field without full lockset replacement. Installation is typically performed by a licensed locksmith or experienced door hardware technician.
Designed for use with Kwikset 663 and 664 series single-sided deadbolts as stated by the manufacturer.
Installation is typically performed by a licensed locksmith or qualified door hardware technician. Before beginning, ensure the door is closed and the deadbolt is in the retracted position. Disassemble the existing lockset following the manufacturer instructions and verify all components are removed before installing conversion hardware. Refer to local building codes for any requirements governing residential door hardware modifications.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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