SC1 vs. KW1: Understanding the Two Giants of the American Residential Keyway

The Market Landscape: In the US, 90% of residential homes use either the SC1 or KW1 keyway. Understanding the subtle differences in their warding is crucial for any technician.

Technical Deep-Dive: The SC1 features a more restrictive, paracentric keyway compared to the KW1. This means standard picks often get stuck, making a 2-in-1 tool like the Novogear360™ essential for clear feedback.

Decoding Accuracy: While KW1 uses 5 depths, the SC1’s 10-depth system (0-9) requires the micron-level precision that only a calibrated measuring ruler can provide. CTA: Upgrade your precision today. [Shop the SC1 Master Series]