Emtek 8566 Brass #8 Single Sided Deadbolt

No. The 8566 is a single sided deadbolt: it throws and retracts from a thumbturn on the inside only, and it ships with no cylinder and no outside collar. The outside face of the door stays blank. That makes it an interior-use lock, for a door you never need to unlock from the other side, such as a closet, storage room, or a secondary interior door. If you need key access from outside, order a keyed cylinder x thumbturn deadbolt instead.

The 8566 covers 1-3/8 inch through 2 inch doors, and it is built as standard for 1-3/4 inch, which is the usual door thickness. There is a door thickness field on the order, so if your door is thicker than 1-3/4 inches, enter the actual thickness when you order. Anything over 2 inches falls outside the range.

Standard deadbolt prep: a 2-1/8 inch cross bore through the face of the door and a 1 inch edge bore for the bolt. Backset is either 2-3/8 or 2-3/4 inches and you pick which one when you order, so match it to the bore already drilled. If the door is already prepped for a tubular deadbolt at one of those two backsets, the 8566 drops into the existing holes.

No, the 8566 is a residential deadbolt and it is single sided with no outside cylinder, which rules it out for an entrance or an exit door in a commercial building. For commercial work look at a Grade 1 or Grade 2 deadbolt such as the Accentra D111 (Grade 1, cylinder x thumbturn, 1-3/8 to 1-3/4 inch doors) or the Arrow DBX61 Grade 2 single cylinder deadbolt.

For that job, yes, it is the wrong part. The 8566 has a thumbturn on one face and nothing on the other. A keyed single cylinder deadbolt is what you want, for example the Deltana CL200LM (Grade 1, cylinder x thumbturn) or the Dexter DB2000 single cylinder, which covers 1-3/8 to 1-3/4 inch doors. Both give you a key outside and a turn inside.

The Emtek 8566 is a non-keyed, single sided deadbolt operated by a thumbturn from inside only, with no cylinder or collar on the outside. The closest functional counterpart is the Callan Model 205S, a one-sided half-bore deadbolt rated Grade 3. Both leave the exterior face blank; the Callan 205S is a half-bore preparation, while the 8566 uses a standard 2-1/8 inch cross bore with a 1 inch edge bore.

The Emtek 8566 is a residential brass deadbolt with a thumbturn inside and no exterior cylinder. If you need a rated product with the same blank exterior, the Arrow E60 exit deadlock is a Grade 2, non-keyed blank plate by thumbturn device with a 1-3/8 inch to 1-3/4 inch door thickness range. The Emtek 8566 covers 1-3/8 inch to 2 inch doors, so for a 2 inch door the Emtek remains the one that fits.

The Emtek 8566 is non-keyed and operates only from the inside thumbturn, though the 8566 line is built around the Schlage C keyway. For a keyed cylinder by thumbturn version on the same opening, the Hager 3115 is a Grade 2 cylinder by thumbturn deadbolt with a Schlage C keyway and a 1-3/8 inch to 1-3/4 inch door range, and the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and a 6-pin cylinder.

Backset is a required choice on the 8566: 2-3/8 inch or 2-3/4 inch. Measure from the edge of the door to the center of the existing 2-1/8 inch bore. Those two are the standard residential backsets, so on a prepped door one of them will match. On a new door, pick the backset that keeps the thumbturn clear of the door stile and any adjacent knob or lever.

Ten finishes: Oil Rubbed Bronze (US10B), Polished Nickel Lifetime (US14), Satin Nickel (US15), Pewter (US15A), Flat Black (US19), Polished Chrome (US26), Polished Brass Lifetime (US3), Unlacquered Brass (US3NL), Satin Brass (US4), and French Antique (US7). The 8566 is a solid brass part from Emtek's Brass collection, so those US codes line up with the same finish codes on the rest of the Emtek brass knobs and levers in a house. Unlacquered brass will live-finish and darken over time; the Lifetime finishes will not.

Tubular. The bolt assembly goes into a 1 inch edge bore with a 2-1/8 inch cross bore for the trim, so no mortise pocket is routed into the door edge. If your door is prepped with a mortise pocket instead, this will not go in; a mortise deadlock like the Dormakaba D900 small case mortise deadbolt is the format for that prep.

Double cylinder deadbolts are not interchangeable with the Emtek 8566. The Baldwin Reserve Double Cylinder Contemporary Round and the Callan Model 210S are both double cylinder, meaning a key is required from both sides, while the 8566 has no cylinder at all and works only from the inside thumbturn. Electronic units such as the Codelocks CL2200 surface deadbolt and the Delaney KP400 also occupy the same door position but are powered, keypad-driven products rather than a mechanical single sided bolt.

The Emtek 8566 requires you to specify either a 2-3/8 inch or 2-3/4 inch backset at the time of order. If the backset is unknown or varies across a group of doors, adjustable-backset deadbolts cover both without a decision up front: the Cal-Royal ED500 is a Grade 3 single cylinder deadbolt with adjustable backset for 1-3/8 inch to 1-3/4 inch doors, the Falcon D111 is a Grade 1 deadbolt with adjustable backset, and the Brinks Raleigh E2401 uses a 4-way adjustable backset.

The Emtek 8566 accepts doors from 1-3/8 inch to 2 inch, with 1-3/4 inch as the standard. Among comparable deadbolts, the Deltana 7312KA2 shares that exact 1-3/8 inch to 2 inch range, though it is a Grade 3 double cylinder unit rather than a single sided thumbturn. Most alternatives stop at 1-3/4 inch, and the Dexter DB1000 series reaches 1-7/8 inch.

The Emtek 8566 uses a standard brass thumbturn as its only means of operation. Where the specification calls out an ergonomic turn piece, the Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn, covering doors from 1-3/8 inch to 1-3/4 inch. It differs from the 8566 in that it is keyed from the outside rather than blank.

No handing to specify. A deadbolt throws straight out of the door edge, so the 8566 works on a left or right hand door either way. The only two things you choose are finish and backset, plus the door thickness if the door is over 1-3/4 inches.

The Emtek 8566 is a solid brass, American Classic style deadbolt offered in ten finishes including Oil Rubbed Bronze US10B, Unlacquered Brass US3NL, Pewter US15A and French Antique US7. For a comparable decorative program, Baldwin offers the Estates 8011 contemporary 1-5/8 inch double cylinder deadbolt and the Reserve Contemporary Square double cylinder deadbolt. Both of those Baldwin units are double cylinder, so they key from both sides rather than leaving the exterior blank like the 8566.