Answer
Aug 05, 2026 - 12:11 PM
The SC1 and SC4 keys refer to different keyway profiles used for Schlage brand locks. The SC1 key is the most common, featuring a single-bitted keyway, while the SC4 keyway is slightly longer and designed for 6-pin cylinders, providing added security and accommodating an extra pin compared to the 5-pin SC1.
