About this item
The Schlage ND53PD RHO 626 is a Grade 1 commercial cylindrical entrance/office lever lock from the Schlage ND Series, the heaviest-duty cylindrical lever platform Schlage builds and the most-specified Grade 1 cylindrical lever in the U.S. commercial spec market. The full part number breaks down as: ND (ND Series Grade 1 cylindrical lever), 53 (function digit for entrance/office), PD (deadlocking latchbolt designation), RHO (Rhodes lever style), 626 (US26D Satin Chrome finish). The ND53PD carries ANSI function F109 (entrance/office). The deadlocking latchbolt is operated by either lever, the outside lever locks via push button on the inside lever and stays locked or unlocked based on button position, and the inside lever is always free for unobstructed egress. Meets and exceeds ANSI/BHMA A156.2 Series 4000 Grade 1. UL/cUL Listed for 3-hour A-label fire-rated single doors. Schlage is part of the Allegion family of brands. Backed by Schlage's commercial warranty. SKU ND53PD RHO 626. In stock under Schlage Lever Locks within Cylindrical Lever Locks in Commercial Locks.
ANSI F109 Entrance/Office Function Explained
Function code F109 is the standard ANSI entrance/office function and one of the highest-volume specifications in the commercial cylindrical lever category. The latchbolt retracts by either lever unless the outside lever is locked by pushing the push button in the inside lever. The push button is released by key from outside, by turning the inside lever, or by closing the door (this is the difference between F109 and F82; F109 auto-releases on door close, F82 stays locked once locked). The key in the outside lever retracts the latch when the outside lever is locked. The inside lever is always free for unobstructed egress, which is what makes this an ANSI Grade 1 code-compliant entrance function. Specify F109 on office building entry, tenant doors, apartment unit entries, dorm rooms, hotel back-of-house, school administrative offices, hospital admin and clinic non-patient room doors, multi-family corridor entries, and any commercial opening that needs keyed entry from outside with always-free interior egress and auto-unlock on door close.
What "PD" Means and Why Spec Writers Add It
The "PD" suffix on ND53PD is the Schlage designation for deadlocking latchbolt. Without PD, the standard ND53 ships with a non-deadlocking latch. The deadlocking feature prevents credit-card and shimming attacks against the latchbolt: a small auxiliary deadlatch piece engages when the door closes, so the main latchbolt cannot be retracted by inserting a thin tool between the door and the frame. Every commercial security spec at this Grade 1 tier should include PD. Order ND53PD, not ND53, for any opening with security exposure.
Rhodes (RHO) Lever Style
The Rhodes lever (RHO) is one of three core lever styles in the Schlage ND Series alongside Sparta (SPA) and Athens (ATH). Rhodes is the traditional curved lever profile with a slight upward sweep, the most-specified ND lever style in the institutional segment because it matches existing Schlage inventory across decades of commercial construction. The Rhodes lever conforms to ADA accessibility requirements. For contemporary projects, the Sparta lever offers a straighter contemporary profile; for traditional-aesthetic specifications, the Athens lever offers a fuller curved sweep. All three lever styles use the same ND chassis architecture so the only difference is visual.
Specifications
Function: ANSI F109 entrance/office with PD deadlocking latchbolt, inside lever always free for egress. Compliance: ANSI/BHMA A156.2 Series 4000 Grade 1, UL/cUL Listed for 3-hour A-label fire-rated single doors, ADA compliant. Door thickness: 1-3/4" standard. Bore: 2-1/8" cross-bore. Backset: 2-3/4" standard, 2-3/8" available. Latch: deadlocking latchbolt, 1/2" throw, anti-friction. Strike: ANSI A115.2 4-7/8" curved lip standard. Cylinder: 6-pin solid brass, Schlage C keyway standard, two nickel silver keys included. Lever: Rhodes (RHO) cast, ADA compliant. Finish: 626 (US26D) Satin Chrome. Compatible with Schlage Everest, Primus, and Primus XP high-security cylinders.
Cylinder, Keyway, and IC Core Compatibility
Standard cylinder configuration ships with a conventional Schlage 6-pin C keyway. ND Series also accepts Schlage Large Format IC cores (LFIC) and Small Format IC cores (SFIC) for facilities running interchangeable core keying. Compatible high-security upgrades: Schlage Everest 29 patented restricted keyway, Schlage Primus, and Schlage Primus XP for facilities requiring patent-protected key control and pick resistance. Standard keying upgrades: Master Keyed (MK), Construction Master Keyed (CMK), Keyed Alike (KA), and Keyed Different (KD). The ND chassis integrates directly into existing Schlage keying systems without rekeying or migration.
Where the ND53PD Sits in the Schlage ND Series
The ND Series covers every common ANSI cylindrical function on the same Grade 1 chassis. Sister functions on the same RHO lever and 626 finish: ND10S passage, ND40S privacy, ND50PD office, ND53PD entrance/office (this product), ND70PD classroom, ND75PD classroom security, ND80PD storeroom, ND91PD vandlgard storeroom, ND96PD vestibule. For Grade 2 medium-duty Schlage cylindrical locks see Schlage Lever Locks catalog. For mortise architecture in the same Grade 1 tier see Schlage L Series and Schlage LE Series. For matching IC cores see Schlage IC Cores.
Where to Specify the ND53PD RHO 626
Office building entry and tenant doors, multi-tenant building common doors, dormitory and student housing entries, hotel back-of-house staff doors, school administrative offices, hospital and clinic non-patient room doors, government office building entries, courthouse non-public doors, multi-family apartment entries, and any commercial opening that needs ANSI Grade 1 keyed entry with deadlocking latchbolt security and always-free interior egress on a budget below mortise pricing.
Where This Sits in the Site Catalog
The ND53PD lives in the Schlage ND Series under Schlage Lever Locks within Cylindrical Lever Locks in Commercial Locks.
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