Dorma C510 Passage/Closet Keyless Lever Lockset

The C510 passage lockset is adjustable for doors from 1-3/8 to 1-3/4 inches, so a 1-3/8 inch door is in range with no extra parts. That covers both the standard 1-3/4 inch commercial door and older 1-3/8 inch interior doors. Thicker than 1-3/4 and you want something else: the Cal-Royal CAL30 passage lock takes 1-3/8 to 2 inch doors.

No locking at all. The C510 is a passage/hall/closet function, non-keyed, so both levers always retract the latch and there is no cylinder and no privacy button. Use it on corridor doors, closets, and utility rooms where the door just needs to stay closed. If the room needs to lock from inside, you want a privacy function instead, like the Orca OCL240; if it needs a key, an entrance function like the Orca OCL250.

ANSI/BHMA Grade 2 certified, tested to A156.2 Series 4000, with the F75 function designation for passage. It is a commercial-duty lockset built for hotels, apartments, churches, municipal buildings, retail, offices, and warehouses. If your spec calls for Grade 1 on a passage door, the Marks USA 195N Survivor Series passage lever is Grade 1, as is the Cal-Royal CAL30.

The Orca Hardware OCL210 is the closest match. Both are Grade 2 cylindrical locksets with a Passage/Hall/Closet function, so neither one keys or locks - the lever simply retracts the latch from both sides. The C510 is a lever set that adjusts for doors 1-3/8 inch to 1-3/4 inch thick with a 2-3/4 inch backset latch, and the OCL210 is rated medium duty at the same Grade 2 level. If you are matching a passage opening in a corridor, closet, or hall and the Dorma lever profile is not required, the OCL210 covers the same job.

The Dorma C510 adjusts for doors 1-3/8 inch to 1-3/4 inch thick, so a thicker leaf falls outside its range. The Cal-Royal CAL30 Calypso Series is a Grade 1 extra heavy duty passage lock that fits doors 1-3/8 inch to 2 inches thick, which covers the heavier leaves you find on older commercial and institutional openings. It is the same passage function - no key, no lock - just built to reach the wider thickness range.

The Marks USA 195N Survivor Series is a Grade 1 passage lever lockset with an American lever and ADA compliant lever design. The Dorma C510 is certified to ANSI/BHMA Grade 2 and carries the F75 function designation for passage. Both leave the door free-swinging with no keying, but the 195N is built to the Grade 1 cycle and strength test level, which is what school corridors, hospital wings, and other heavy-traffic facility standardization programs are usually written to.

No. The C510 is a non-keyed passage function lock; the lever retracts the latch from both sides and there is no locking at all. For a door that has to secure from the inside, the Orca Hardware OCL240 is a Grade 2 privacy cylindrical lockset, and the Cal-Royal CAL20 Calypso Series is a Grade 1 extra heavy duty privacy lock fitting doors 1-3/8 inch to 2 inches thick. Privacy function gives you the inside thumbturn or pushbutton with an emergency release outside, which is what a bath or bedroom opening requires.

The C510 is non-keyed by design, so a keyed opening needs a different chassis. At the same Grade 2 level, the Orca Hardware OCL250 is a Grade 2 entrance cylindrical lockset, and the Stanley Security QCL150 is a Grade 2 entry lever with a Sierra bent lever and rose, supplied less cylinder with a square 2-3/4 inch backset latch and a 4-7/8 inch by 1-1/4 inch ASA strike - the same backset and ANSI strike prep the C510 uses, so the door prep carries over. If the opening needs storeroom function instead of entrance, the Marks USA 175RF is a Grade 2 storeroom clutched lever with a small format IC prep, less core, on a 2-3/4 inch backset with an ANSI strike.

Handing depends on which lever you pick, not on the chassis. The C500 chassis is a passage function with a lever on each side, so the mechanism itself is non-handed; whether the lever body works both ways comes down to the LC, LG, or LR design you order. Pick the lever style first and match it to the door swing.

Six finishes across three lever designs. Finishes are 605 bright brass, 606 satin brass, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome, and 626 satin chrome. Levers are LC, LG, and LR, and every lever is offered in all six finishes, so you can standardize a building on one finish and still mix lever styles by area. 626 satin chrome and 613 oil rubbed bronze are the two that most often match existing commercial openings.

Nothing extra for a standard opening. Each C510 ships as a complete set: levers both sides, the 15230 2-3/4 inch backset latch with a 1 inch square corner faceplate, and the 5001 ANSI strike. You choose finish and lever design at the order; there is no cylinder, keyway, or core to specify because the passage function is non-keyed.

Yes, and that is the usual way to spec it. The C500 Series covers ten functions on the same cylindrical chassis, so a building can run C510 passage on closets and corridors and other C500 functions on the doors that lock, all with the same lever design and finish and the same 2-3/4 inch backset prep. One door prep, one look across the floor.

Different jobs entirely. The C510 is a mechanical passage lever, non-keyed, no access control, no batteries, no audit trail. If you need code-based entry on a cylindrical prep, look at the Alarm Lock Trilogy T2 DL2700 with 100 user codes, or the TownSteel XCE-2000 keypad lockset. Note the door thickness: the DL2700 wants 1-5/8 to 1-7/8 inch doors and the XCE-2000 wants 1-3/4 to 2 inch, so on a 1-3/8 inch door the C510 fits where those do not.

They are both described as keyless, but the word means two different things. The Dorma C510 is keyless because it is a passage function lock with no cylinder and no locking mechanism - the latch is always retractable. The Alarm Lock Trilogy T2 DL2700 is a Grade 1 standalone electronic cylindrical lock with a digital keypad, 100 user codes, and IC/SFIC compatibility, and it fits doors 1-5/8 inch to 1-7/8 inch thick, a different range than the C510's 1-3/8 inch to 1-3/4 inch. If you want access control with codes and an audit of who came through, that is the electronic family; if you want a free-swinging corridor or closet door, the C510 is the mechanical passage set.

The C510 is a working passage lockset - it has a live cylindrical chassis and a 2-3/4 inch backset latch, so turning the lever retracts the latch and the door stays latched when closed. The Orca Hardware OCL2170 is a Grade 2 half dummy lever, which is a fixed trim with no latch and no chassis at all; it mounts to the face of the door as a pull. On a closet or double door where one leaf never latches, the dummy is the correct part. If the door needs to hold shut, you need the latching passage set.

Not for the same opening. Both are Grade 2, but the 110AB is an entrance/office function knob lockset on a 2-3/8 inch backset in satin stainless steel, so it is keyed and it uses a round knob. The C510 is a non-keyed passage lever on a 2-3/4 inch backset. The two differences that matter on the job: the backsets are different, so the existing bore centerline has to match, and a knob does not satisfy ADA lever requirements the way a lever does. If you are replacing a lever on a passage opening, stay with a lever passage set.

The Dorma C510 ships with a 5001 ANSI 1-1/4 inch by 4-7/8 inch square corner strike on a 2-3/4 inch backset. The Stanley Security QTL230E in the QTL200 Series is a Grade 2 passage lever with a Sierra bent lever, adjustable square latch, and the same 4-7/8 inch by 1-1/4 inch ANSI strike, and the Marks USA 175RF storeroom lever runs a 2-3/4 inch backset with an ANSI strike as well. Sharing the strike cutout and backset means you can mix functions across a building on one common frame prep rather than re-prepping frames per opening.

The C510 is a passage function set with no locking, so a classroom that has to be secured needs a different lock. Among the keyless options, the TownSteel XCE-2000 Series is a Grade 1 heavy duty electronic cylindrical lockset with a keypad and classroom function for doors 1-3/4 inch to 2 inches thick, and the XCE-9000 Series is the classroom intruder version at the same grade and thickness range. Use the C510 where the door only needs to latch, and a classroom function lock where the door needs to be locked down.