Schlage Commercial S51PSAT609 Entry Knob Lock Antique Brass

Product Description

The SCHLAGE COMMERCIAL S51PSAT609 is an entry knob lockset in the S Series, featuring a Saturn knob design with a C keyway and keyed-different (KD) cylinder. This unit ships complete with a 16-203 latch and a 10-001 strike plate, making it a ready-to-install solution for commercial and institutional door hardware applications. The finish is Antique Brass (609). Designed for entry function, the lockset allows free egress from the inside while requiring a key for entry from the outside. It is a standard cylindrical knob lock intended for installation by a licensed locksmith or commercial door hardware technician.

The S51PSAT609 is suited for commercial, institutional, and multi-family residential applications where a traditional knob-style entry lockset is specified. Typical installations include office doors, interior corridor doors, and light-duty commercial entry points that require keyed entry control. The KD configuration means each lock ships with its own unique key, appropriate for situations where master keying is not required or will be handled separately on site. The Antique Brass finish coordinates with period or traditional architectural hardware specifications.

Key Features

• Entry function: free egress from interior, key required for exterior entry
• Saturn knob design in Antique Brass (609) finish
• C keyway cylinder, keyed different (KD)
• Includes 16-203 latch and 10-001 strike plate for complete installation
• S Series cylindrical knob lockset construction
• Sold individually; case quantity of 6 available

Compatibility

Designed as an OEM-style cylindrical knob lockset replacement or new installation fitting standard commercial door prep for S Series cylindrical locksets. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed locksmith or qualified commercial door hardware technician familiar with cylindrical lockset prep standards. Power down any access control or electric strike systems before beginning installation. Verify door thickness and backset measurement against the latch specifications before mounting. Follow all applicable local building codes and fire egress requirements when specifying entry-function hardware on corridor or exit-path doors.