Cal-Royal CSL00 US26D Entrance/Office Lock, Satin Chrome - with Clutch

The Cal-Royal CSL00 is the clutch variant of the Pioneer Series SL00 entrance/office lock, built specifically for openings where vandal resistance matters more than any other factor. The clutch mechanism lets the outside lever spin freely when locked, so anyone trying to force or twist the handle just feels it rotate with zero resistance, protecting the internal chassis and latchbolt from break-in attempts. ANSI A156.2 Series 4000 Grade 2 certified, 400,000 cycle tested, UL listed latchbolt. Common spec for school corridors, apartment common areas, hospital non-patient rooms, hotel back-of-house, and any public building exposed to high traffic or potential vandalism. 

What Is the Cal-Royal CSL00 Clutch Lever Lock

Cal-Royal's Pioneer Series is their Grade 2 cylindrical lever line, positioned as a mid-priced commercial workhorse between entry-level residential locks and Grade 1 heavy-duty commercial hardware. The SL lever design is the series' most popular lever style: clean, round, architectural, ADA-compliant. Within the SL family you can choose standard (SL00) or clutch (CSL00). The "C" prefix means clutch. Function is entrance/office (ANSI F82/F109): outside is key-locked, turn and push the inside button to keep the outside locked until manually unlocked, push the button alone to lock until next key entry or inside handle turn. Inside handle is always free for egress.

How the Clutch System Works (Vandal Resistance Explained)

On a standard (non-clutch) lever lock, when the outside is in the locked position and someone tries to force the handle by pushing down hard, all of that torque transfers directly into the chassis, the spindle, and the latch retractor. Over time, repeated vandal attacks loosen mounting screws, bend spindles, and can actually break the internal mechanism. The clutch system isolates the outside lever from the internal chassis when the lock is in the locked state. When someone tries to force the lever, it rotates freely and transmits zero torque to the lock mechanism. The latch stays engaged, the chassis stays undamaged, and the attacker gets nowhere. When the lock is unlocked (by key from outside or manual unlocking from inside), the clutch re-engages and the lever operates normally. This is why clutch locks are the standard spec in schools, student housing, low-income apartment buildings, and any opening in a building exposed to vandalism or repeated forced-handle attempts.

Cal-Royal CSL00 Specifications

Full specs for your door schedule:

• Function: ANSI F82 / F109 Entrance / Office (turn and push button locking)

• Series: Cal-Royal Pioneer Grade 2

• Lever style: SL (with clutch = CSL)

• Grade: ANSI/BHMA A156.2 Series 4000 Grade 2

• Cycle test: 400,000 cycles minimum

• Federal: FF-H 106C compliant

• UL: latchbolt listed

• Finish: US26D Satin Chrome (BHMA 626) standard

• Vandal resistance: clutch system, free-rotating outside lever when locked

• Door thickness: 1-3/8" to 1-3/4"

• Backset: 2-3/4" standard, with 2-3/8", 3-3/4", and 5" optional

• Front: 2-1/4" x 1-1/8", adjustable for flat or beveled doors (1/8" in 2")

• Latchbolt: 1/2" throw solid brass, reversible for RH or LH

• Latch screws: 8-32 x 1" flat-head Phillips dual-purpose

• Strike: ASA 4-7/8" standard; T-strike 2-3/4" optional; full lip available on request

• Cylinder: 6-pin solid brass with Schlage "C" keyway standard

• Keying: keyed different (standard), keyed alike, master keyed , or less core / less cylinder

• Handing: field reversible (RH or LH)

• Options: tactile and lead lining available on request

• Trim: wrought brass, bronze, or stainless steel; levers are zinc casting plated to match

CSL00 vs SL00 vs ICSL00 (Which Variant Do You Need)

Three closely related products in the Pioneer SL family cover different needs. Order it when vandalism isn't a concern and budget matters.