Emtek 8523 Modern Disc Single Sided Deadbolt - Brass

No. The 8523 Modern Disc is a single sided deadbolt, thumbturn on the inside only, with no cylinder and no collar on the other face. Nothing shows on the outside and there is no key. It's meant for interior openings, or for a door where you never need to operate the bolt from the far side. If you need key access, a cylinder x thumbturn deadbolt is the type to buy instead.

It covers 1-3/8 inch through 2 inch doors. It ships set up for 1-3/4 inch, which is standard, so if your door is thinner or thicker than that you need to state the thickness when you order (there's a door thickness field on the order for exactly that). A 1-3/8 inch older interior door and a 2 inch slab both work, they just need the right build.

Yes, if the prep is standard. The 8523 uses a 2-1/8 inch cross bore and a 1 inch edge bore, which is the normal tubular deadbolt prep, and you pick either a 2-3/8 or 2-3/4 inch backset to match what's already drilled. Measure from the door edge to the center of the existing hole to find your backset before ordering, since it's a required selection.

Both are offered and you have to choose one at order time, it isn't adjustable. Residential entry doors are commonly 2-3/8 inch, commercial and heavier doors more often 2-3/4. On a retrofit, go by the existing hole, not by the door. If you'd rather not commit, deadbolts with an adjustable or 4-way backset, like the Cal-Royal ED500 or the Brinks Raleigh E2401, cover both from one box.

Not for the entry. With a thumbturn on one side and a blank face on the other, the 8523 gives you no way in from the corridor, which is a problem for a property manager who needs access, and in many jurisdictions it fails egress and access requirements on a dwelling entry. Use it on interior doors, closets, or a door where the other side is never operated. For a unit entry you want a cylinder x thumbturn deadbolt, such as the Hager 3115 or the Dexter DB2000 single cylinder.

The nearest match is the Callan Model 205S, a one-sided half-bore deadbolt in Grade 3. Like the Emtek 8523, it works from the inside only with no outside cylinder, so it takes the same half-bore prep rather than a full cross bore plus exterior trim. The 8523 is offered in seven finishes including Oil Rubbed Bronze (US10B), Flat Black (US19) and Unlacquered Brass (US3NL) with a brass substrate, and takes either a 2-3/8 inch or 2-3/4 inch backset.

Look at the Arrow E60, a Grade 2 exit deadlock with a blank plate on the outside and a thumbturn on the inside, covering doors 1-3/8 inch to 1-3/4 inch thick. It gives the same no-key-outside operation as the Emtek 8523 Modern Disc, which is a residential single sided deadbolt in a contemporary style. The E60 uses a blank outside plate where the 8523 has no outside cylinder or collar at all.

Step up to a cylinder x thumbturn deadbolt such as the Hager 3115, a Grade 2 deadbolt with a Schlage C keyway that fits doors 1-3/8 inch to 1-3/4 inch, or the Dexter DB1000 single cylinder in Grade 1 for doors 1-3/8 inch to 1-7/8 inch. The Emtek 8523 Modern Disc is non-keyed and turns from the inside only, so it cannot be keyed to an exterior key; both of those use an outside cylinder. The 8523 itself is prepped for the Schlage C keyway, so an existing Schlage C key system carries over to the Hager 3115.

The Emtek 8523 Modern Disc is a residential tubular deadbolt. For rated openings, the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch, and the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and 6-pin cylinder carrying a fire rating. Both are cylinder x thumbturn, so they add an outside key that the 8523 does not have.

The Emtek 8523 Modern Disc covers 1-3/8 inch to 2 inch door thickness as standard, and thicker doors can be specified. Among comparable deadbolts, the Deltana 7312KA2 double cylinder Grade 3 also spans 1-3/8 inch to 2 inch, and the Corbin Russwin DL3011 Grade 1 cylindrical deadlock covers 1-3/4 inch to 2-1/4 inch. The Deltana and Corbin Russwin units are keyed, while the 8523 is thumbturn only from the inside.

The 8523 takes a full 2-1/8 inch cross bore straight through the door, same as a keyed deadbolt, even though only the inside face carries hardware. If you're working with a door that can't be bored through, or you don't want a plugged hole showing on the other side, a one-sided half-bore deadbolt like the Callan 205S is the alternative to look at.

Seven, all on solid brass: Oil Rubbed Bronze (US10B), Polished Nickel Lifetime (US14), Satin Nickel (US15), Flat Black (US19), Polished Chrome (US26), Unlacquered Brass (US3NL), and Satin Brass (US4). Order by the model plus the finish code, so 8523US15 is the satin nickel. Worth knowing that US3NL is unlacquered, so it will patina with handling rather than staying bright, and US14 is a lifetime finish that won't.

The 8523 won't do it, it has no cylinder at all. Two directions from there: a blank plate by thumbturn deadlock like the Arrow E60, which is non-keyed but built as a Grade 2 exit deadlock for 1-3/8 to 1-3/4 inch doors, or a cylinder by blank deadlock like the Corbin Russwin DL3011, which keys from one side and shows a blank on the other, for 1-3/4 to 2-1/4 inch doors. Which way round the key and the blank face is the whole decision.

It's built and catalogued as residential hardware, non-keyed, and no grade is carried on it. For a commercial opening where a spec calls for a graded deadbolt, look at Grade 1 options like the Delaney LM Series or the Design Hardware D1 Series, or Grade 2 like the Cal-Royal CB160. The 8523 is a decorative interior deadbolt, and that's the job it's right for.

No. The Bravura 310RC Elite is a Grade 2 contemporary round deadbolt with cylinder x thumbturn function, meaning it has a keyed cylinder on the outside face. The Emtek 8523 Modern Disc is a single sided, non-keyed deadbolt operated by thumbturn from inside only, with no cylinder or collar on the exterior. Both read as contemporary round trim, so they look similar in a photo, but they take different door prep and only one of them can be opened from outside.

The Baldwin Reserve Contemporary Round is a double cylinder deadbolt, keyed on both faces, so it needs a key inside and out. The Emtek 8523 Modern Disc is a single sided deadbolt with a thumbturn inside and nothing on the outside face. On a door where egress must not depend on a key, the thumbturn side of the 8523 is the operating point; a double cylinder such as the Baldwin Reserve or the Callan Model 210S in Grade 3 is chosen where key control on both sides is the requirement.

The 8523 is the Modern Disc style in the brass collection, a round disc rose in a contemporary profile, and it's offered in the same seven Emtek finish codes used across the line, so pairing it visually with other Emtek Disc trim on adjacent doors is straightforward. Keying doesn't enter into it here, since this one is non-keyed. If the rest of the building is keyed alike on Schlage C, the 8523 simply sits outside that scheme.

It comes as the deadbolt assembly with the thumbturn, latch and strike, and no cylinder or collar, since there's no outside trim to mount. What you do need to settle before ordering is the backset, 2-3/8 or 2-3/4 inch, and the door thickness if it isn't 1-3/4 inch. Those two are the only choices that change the parts in the box.