Sargent 82-5673 Indicator Spindle Cam – Thumb Turn Overtravel Function for 8200 & 7800 Series Mortise Locks

The Sargent 82-5673 is a genuine OEM indicator spindle cam designed for the Sargent 8200 Series and 7800 Series mortise locks. Engineered specifically for the thumb turn overtravel function, this replacement spindle cam ensures precise mechanical engagement between the thumb turn and the mortise lock body — restoring proper lock operation without improvised substitutes or aftermarket guesswork. As an authentic Sargent factory part, the 82-5673 delivers the exact tolerances and geometry required for reliable, long-term performance in commercial and institutional door hardware installations.

Institutional Grade Features & Benefits

• Genuine OEM Part: Factory-sourced directly from Sargent, guaranteeing fit, form, and function exactly as originally specified for the 8200 and 7800 Series mortise lock platforms.
• Thumb Turn Overtravel Function: Specifically engineered to support the indicator thumb turn overtravel mechanism, ensuring the cam correctly translates thumb turn rotation into mortise lock actuation during occupied/vacancy indication cycles.
• Precision Replacement Spindle Cam: Maintains the tight mechanical tolerances required by commercial-grade mortise hardware, minimizing wear and preventing premature failure in high-traffic applications.
• Broad Series Compatibility: Confirmed compatible with Sargent 8200 Series and 7800 Series mortise locks, covering a wide installed base of commercial and institutional door hardware.
• Restores Original Lock Performance: Replaces worn, damaged, or missing spindle cam components to bring mortise lock assemblies back to full manufacturer specification without requiring full lock replacement.
• Ideal for Facilities Maintenance & Locksmiths: A critical service part for building maintenance teams, institutional facilities managers, and professional locksmiths servicing Sargent mortise hardware in offices, healthcare facilities, hotels, and education buildings.

Technical Details