Master Lock BC Series - Grade 3 Biscuit Knob Passage Lockset

Both. The BC04 ships with a six-way adjustable latch that sets to either 2-3/8 inch (60mm) or 2-3/4 inch (70mm) backset, so you don't have to measure before ordering. Those are the two standard bored-door backsets, and one part covers both. The same latch also adapts to square-corner face plate, round-corner face plate, or drive-in with no faceplate, which is what makes it a safe stock item for a property manager carrying spares for a mixed building.

For interior unit doors in residential use, yes. The BC04 is ANSI Grade 3 and rated residential, which is the tier built for closet, hall and bedroom-side doors in a home or apartment. It's the wrong pick for a corridor, an office suite, or anywhere with commercial traffic. For those step up to a Grade 2 passage set like the Dexter C2000 or the Corbin Russwin CK4410, or Grade 1 for heavy traffic with the Schlage D10S or the Falcon X101.

Two passage knobsets in the same function carry a fire rating: the Falcon W101 is a Grade 2 medium duty passage/closet knob with a 2-3/4 inch backset, and the Falcon X101 is a Grade 1 heavy duty passage knobset with an interchangeable core for doors 1-3/8 inch to 2-1/4 inch. Both are Passage/Hall/Closet function like the BC04, which is a residential Grade 3 set.

No - they are different parts. The BC04 is a passage lockset with a six-way adjustable latch that actually retracts and holds the door closed. A dummy knob is surface trim with no latch: the Schlage A170 single dummy trim, the BEST 6K single dummy trim, the Cal-Royal BA40 dummy knob and the Bravura Biloxi dummy knobset are all dummy function. Use a dummy only on an inactive leaf or a door held by a ball catch, and a passage set anywhere the latch has to do the work.

For a like-for-like interior passage knob, the Pamex FTF Baron knob lockset in passage function is the nearest match: it is a Grade 3 passage knob lockset like the BC04, which is Grade 3 with a Passage/Hall/Closet function. The Pamex FTF passage lockset fits doors 1-3/8 inch to 1-3/4 inch thick. Both are non-keyed knob sets for hall and closet doors, so the swap does not change how the door operates.

The BC04 is a Grade 3 residential passage knob. For higher-traffic commercial openings, step up the grade: the Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset that carries a fire rating and covers doors 1-3/8 inch to 2-1/4 inch thick, and the Schlage D10S Orbit knob is a Grade 1 heavy duty passage latch. The Corbin Russwin CK4310 is another Grade 1 passage/closet cylindrical knob, rated for 1-3/8 inch to 2 inch doors. All three keep the same non-locking passage operation.

The BC04 is a non-keyed passage knob for interior non-locking hall and closet doors, so it will not lock at all. For a bed or bath door that needs a privacy button, the Pamex FTF Baron knob in privacy function is the same Grade 3 family and fits 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal BER20 is a Grade 3 privacy knob lock with brass trim over the same thickness range. The Dexter C2000 privacy ball knob is the Grade 2 equivalent.

The BC04 is non-keyed, so a keyed opening needs a different function. In the same Grade 3 class, the Cal-Royal BER00 is an entrance/office knob lock with a Kwikset keyway for 1-3/8 inch to 1-3/4 inch doors, and the Pamex FTF Baron in entrance/office function is Grade 3 over the same range. The Kwikset 400P-CP Polo is a Grade 3 keyed entry knob for 1-3/8 inch to 1-3/4 inch doors. For a keyed commercial opening, the Sargent 6G04 is a Grade 2 storeroom/closet knob with a single cylinder.

No handing to specify. The BC04 is a non-handed cylindrical passage set, the knobs are identical on both sides and the adjustable latch flips to suit either swing. Order by finish only.

The latch comes with the knobset, and it's the six-way adjustable type, so it covers 2-3/8 or 2-3/4 inch backset and square corner, round corner, or drive-in prep in the one part. That's the whole reason to stock this set for turn work: one box handles whatever the door was bored for.

Match the tier rather than the trim. For keyed entry at Grade 3 look at the Cal-Royal BER00 entrance/office knob with a Kwikset keyway, or the Pamex FTF Baron in entrance/office. For bedroom and bath privacy at the same grade, the Cal-Royal BER20 and the Pamex FTF privacy version. Those Cal-Royal and Pamex sets both list a 1-3/8 to 1-3/4 inch door thickness range, which is the standard interior and commercial door.

Both are interior passage knobs. The BC04 is a Grade 3 biscuit knob with a six-way adjustable latch that fits 2-3/8 inch or 2-3/4 inch backset and square corner, round corner or drive-in preps. The Kwikset 200P Polo passage knob ships with a 6AL latch and RCS round corner strike, and the 200P-CP version ships with a round corner adjustable latch and round corner strike. The choice comes down to knob style and which latch and strike the existing door prep takes.

Yes. Several Grade 2 passage knobs sit between them and keep the same non-keyed hall and closet operation as the Grade 3 BC04: the Dexter C2000 passage ball knob and the Corbin Russwin CK4410 Global knob are both Grade 2 passage locks for doors 1-3/8 inch to 1-3/4 inch, and the Arrow MK01 and Arrow RK01 are Grade 2 non-keyed passage cylindrical knobs over the same thickness range. The Falcon W101 is a Grade 2 medium duty passage/closet knob with a fire rating and a 2-3/4 inch backset.

For thick doors, choose a passage knob whose published range covers them. The Falcon X101 Grade 1 passage knobset takes doors 1-3/8 inch to 2-1/4 inch, and the Corbin Russwin CK4310 Grade 1 passage/closet knob takes 1-3/8 inch to 2 inch. Both remain non-keyed passage function, so the door still operates as a hall or closet opening the way a BC04 would.

Yes. The BC04 is a residential biscuit knob passage set in bright brass, antique brass and satin nickel. If the look needs to change, the Baldwin Estate 5011 Colonial passage knob with 5058 rose and the Baldwin Estate 5000 Baltimore knob passage lock with 5048 rose, 2-3/8 inch backset and full lip strike are both passage function. The Omnia 434/PA egg-shaped knob latchset is a solid brass passage/hall/closet set with a 3 inch projection. The Bravura Albany, Lynchburg and Dallas knobsets are Grade 2 passage sets with round or rectangular trim.

Yes, but it is a different kind of lock. The Lockey 3830 is a mechanical keyless combination knob lock with an auto-locking passage function for doors 1 3/16 inch to 2 inch thick. It controls entry by combination, where the BC04 is a non-keyed passage set that only latches the door and never restricts who opens it.

Three: 605 bright brass, 609 antique brass, and 619 satin nickel. If you're matching existing hardware in a building, 619 satin nickel is the usual companion to brushed chrome and brushed nickel trim, and 605 bright brass is the polished brass match. All three are the same knob and the same adjustable latch, so you can mix finishes door to door without changing the prep.