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Kwikset 663-UL UL Rated One Sided Turn Deadbolt with Round Corner Latch and Dual RCS
The Kwikset 663-UL One-Sided Turn Deadbolt provides strong, UL-rated security for residential and light commercial applications. With an interior-only thumb-turn and no exterior keyway, this deadbolt is ideal for areas requiring restricted access or additional reinforcement. Featuring a round corner latch and dual RCS (round corner square) strike plates, the 663-UL delivers dependable strength, smooth operation, and Kwikset’s trusted quality.
Key Features & Benefits
-
One-Sided Turn Function
Operates from the inside with a thumb-turn only; no external keyway for added privacy and security. -
UL Fire Rated
Meets UL standards for fire resistance and durability, ensuring enhanced protection and code compliance. -
Durable Round Corner Latch
Sturdy latch design offers smooth operation and compatibility with most standard doors. -
Dual RCS Strike Plates
Reinforced strike plates provide stronger frame support, secure alignment, and added durability. -
Kwikset Reliability
Manufactured to deliver long-lasting performance backed by Kwikset’s reputation for quality. -
Quick & Easy Installation
Installs in minutes with a screwdriver; designed to fit standard door preparations.
Specifications
| Product Type | One-Sided Turn Deadbolt |
| Model Number | 663-UL |
| Function | Interior thumb-turn only (no key) |
| Latch | Round Corner Latch |
| Strike Plates | Dual RCS (Round Corner Square) |
| Rating | UL Fire Rated |
| Door Thickness | 1-3/8" to 1-3/4" standard |
| Application | Residential / light commercial security |
| Installation | DIY-friendly, screwdriver only |
RESOURCES & DOWNLOADS
Manufacturer Resources
Product Specs
- Category:
- Mechanical Locks
- Style:
- Traditional
- Product Group:
- Mechanical Locks
- Product Subgroup:
- Deadbolts
- Product Type:
- Deadbolts
- Subcategory:
- Deadbolts
- Commercial/Residential:
- Residential
- Type:
- Mechanical
- Features:
- Microban
- Keyed Function:
- Non-Keyed
- Product Attribute:
- Deadbolts