Kwikset 663SQT-514.DS Square Deadbolt Matte Black

Product Description

The KWIKSET 663SQT-514.DS is a one-sided turn square deadbolt designed for residential door security applications. This unit combines a square-profile turn knob with an RCAL latch, dual RCS components, and a 5303 full lip strike plate, delivering a complete deadbolt assembly ready for installation. Finished in Matte Black, it suits a range of contemporary and transitional door styles. The one-sided configuration means the deadbolt operates by interior turn only, with no exterior key cylinder, making it suited for doors where interior-only locking is the intended function. Weighing 0.6 pounds, the assembly ships as a single unit.

This deadbolt is intended for residential interior or secondary door applications where one-sided locking is required. Typical installations include doors leading to attached garages, utility rooms, or interior spaces where exterior key access is not needed. The included RCAL latch and 5303 full lip strike provide the hardware necessary for a complete installation without sourcing additional strike components. The Matte Black finish coordinates with standard door hardware sets in that finish family.

Key Features

• One-sided operation via interior turn knob — no exterior key cylinder
• Square profile turn design for a clean, contemporary look
• Includes RCAL latch for coordinated latch and deadbolt installation
• Dual RCS components included in the assembly
• 5303 full lip strike plate included for complete door prep
• Matte Black finish for compatibility with modern door hardware sets

Compatibility

Designed as an OEM-style replacement or new-installation deadbolt for residential doors requiring one-sided turn deadbolt function with a square trim profile.

Installation Notes

Installation should be performed by a qualified locksmith or experienced installer following the door manufacturer's bore specifications and local building code requirements. Power is not required for this mechanical deadbolt assembly. Before installation, confirm door thickness and backset compatibility with the latch included. Do not over-drive strike plate screws, as this can distort the strike face and affect bolt alignment.