Emtek 8559 Knoxville Single Sided Deadbolt - Brass

Thumbturn only. The 8559 Knoxville is a single sided deadbolt operated from the inside by the thumbturn, and it ships with no cylinder and no collar, so there is nothing to key and no outside trim. Use it where you never need to unlock from the other side, like a closet, a storage room, or the inactive leaf of a pair. If you need outside key access, choose a cylinder x thumbturn deadbolt instead.

It covers 1-3/8 inch through 2 inch doors. The standard build is set up for 1-3/4 inch, which is the usual commercial and exterior thickness, so anything thicker has to be called out on the order (there is a door thickness field for exactly that). A 1-3/8 inch interior door, common on older interior openings, is within range.

It uses standard tubular deadbolt prep: 2-1/8 inch cross bore through the face and a 1 inch edge bore for the latch. If the door already has that prep at a 2-3/8 or 2-3/4 inch backset, the 8559 goes in without new boring. On the outside face you will see the old cylinder hole exposed, since this deadbolt has no exterior trim or collar to cover it.

No. It is a residential deadbolt in solid brass, single sided, non-keyed, with no stated ANSI grade. For a commercial opening look at a graded unit instead: the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt, and the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock listed for 1-3/4 to 2-1/4 inch doors. For a classroom-function deadbolt the Falcon D111 is Grade 1 heavy duty.

The Emtek 8559 Knoxville is a single sided, non-keyed deadbolt operated by a thumbturn from inside only, with no cylinder or collar. Two peers cover the same one-sided idea: the Callan Model 205S is a one-sided half-bore deadbolt, and the Arrow E60 is a Grade 2 exit deadlock with a blank plate on the outside and a thumbturn inside, rated for 1-3/8 inch to 1-3/4 inch doors. The Callan 205S uses a half bore rather than the 8559's full 2-1/8 inch cross bore, and the Arrow E60 fills the outside face with a blank plate instead of leaving it plain.

The Emtek 8559 Knoxville is non-keyed and turns from the inside only, so it gives no outside key access. For a keyed opening in a Schlage C keyway, which is the 8559's keyway, the Hager 3215 is a single cylinder deadbolt with a 1 inch throw for 1-3/8 inch to 1-3/4 inch doors, and the Hager 3115 is a cylinder x thumbturn deadbolt with a Schlage C keyway over the same thickness range. Both are fire rated. If you want the same look in a residential design line, Bravura's 310B Elite is a Grade 2 traditional round cylinder x thumbturn deadbolt.

The Emtek 8559 Knoxville is a residential tubular deadbolt. Where a specification calls for a Grade 1 deadbolt, peers that carry that rating include the Accentra D111 single cylinder deadbolt with a 2-3/8 inch backset for 1-3/8 inch to 1-3/4 inch doors, the Falcon D111 Grade 1 classroom deadbolt with adjustable backset, the Dexter DB1000 single cylinder deadbolt for 1-3/8 inch to 1-7/8 inch doors, and the Design Hardware D1 Series double cylinder deadbolt for 1-3/4 inch doors. The Design Hardware D1 is also listed extra heavy duty.

The Emtek 8559 Knoxville covers 1-3/8 inch to 2 inch doors as standard and is built around a 1-3/4 inch door, with thicker doors called out at time of order. Other deadbolts in the same thickness territory are the Deltana 7312KA2 double cylinder Grade 3 deadbolt, also 1-3/8 inch to 2 inch, and for heavier stock the Corbin Russwin DL3011 Grade 1 cylindrical deadlock, which covers 1-3/4 inch to 2-1/4 inch. The DL3011 is a cylinder by blank deadlock rather than a thumbturn unit.

The Emtek 8559 Knoxville is non-keyed and takes no core. For small format interchangeable core work, the Arrow E61 26D IC is a Grade 2 single cylinder deadlock with SFIC prep supplied less core for 1-3/8 inch to 1-3/4 inch doors, the Deltana CL200LAIC is a Grade 2 single deadbolt with an interchangeable core and a 2-3/4 inch backset, and the Delaney LM Series is a Grade 1 single cylinder less core deadbolt in dull chrome US26D.

The Emtek 8559 Knoxville is a residential single sided deadbolt. Where the opening is rated, the Hager 3115, 3118, 3214 and 3215 deadbolts are all listed fire rated for 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch. The Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and a 6-pin cylinder, the same keyway family the 8559 is built around.

Seven brass finishes: Oil Rubbed Bronze (US10B), Satin Nickel (US15), Pewter (US15A), Polished Chrome (US26), Polished Brass Lifetime (US3), Unlacquered Brass (US3NL), and French Antique (US7). Unlacquered brass is the one to watch on a fleet of doors, it is left bare and will patina over time rather than holding the as-shipped look, while the lifetime polished brass keeps its finish.

The 8559 Knoxville is built on Emtek's Schlage C keyway platform, so it keys into the same system as the rest of the Emtek line, but this particular version ships non-keyed with no cylinder supplied. That matters if you are standardizing a house or a unit on one key: the keyed openings can all be Schlage C while this interior-only opening stays thumbturn.

The 8559 is the non-keyed member of a cylinder x thumbturn family, so if you need key access outside you want a single cylinder deadbolt. Comparable single cylinder units we carry include the Dexter DB1000 (Grade 1, 1-3/8 to 1-7/8 inch doors), the Hager 3115 (Grade 2, Schlage C keyway, 1-3/8 to 1-3/4 inch), and the Accentra D111 (Grade 1, 2-3/8 inch backset). The Hager shares the 8559's Schlage C keyway, so it can be keyed into the same system.

The Emtek 8559 Knoxville is ordered for a specific backset, either 2-3/8 inch or 2-3/4 inch, so the bore has to be measured first. If you would rather field-adjust, the Brinks Raleigh Series round single cylinder deadbolt and the Brinks Mendocino Series square single cylinder deadbolt both use a 4 way adjustable backset, and the Cal-Royal ED500 Grade 3 single cylinder deadbolt has an adjustable backset for 1-3/8 inch to 1-3/4 inch doors. All three are keyed cylinder x thumbturn units rather than one-sided.

No. The Emtek 8559 Knoxville is a complete single sided tubular deadbolt with a thumbturn. The Baldwin Reserve 8BR0618001 is a deadbolt spacer for a double cylinder application, and the BEST 8T is the T Series tubular deadbolt tube component on its own. Both are pieces that go into or alongside a deadbolt assembly, not a finished lock you can hang on a door by itself.

The Emtek 8559 Knoxville has no cylinder at all; it is thumbturn operated from the inside face only. The Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder deadbolt, keyed on both faces, and the Baldwin Reserve double cylinder deadbolts come in contemporary round and contemporary square trims. Double cylinder units require a key on the inside as well as the outside, which some jurisdictions restrict on egress doors; the 8559's thumbturn releases by hand from inside.

The Emtek 8559 Knoxville is thumbturn operated from the inside in a brass American Designer style. If grip is the concern, the Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn for 1-3/8 inch to 1-3/4 inch doors. It is a keyed cylinder x thumbturn lock, so the outside face takes a cylinder rather than staying blank as on the 8559.

The Emtek 8559 Knoxville needs a 2-1/8 inch cross bore and a 1 inch edge bore, so the door has to be prepped. If you cannot bore the door, the Codelocks CL200 is a surface deadbolt with key override and the Codelocks CL2200 is an electronic surface deadbolt in a brushed steel finish, both light to medium duty. Surface units mount on the face of the door rather than through it, so they look different from the 8559's flush brass thumbturn.

The Emtek 8559 Knoxville is a mechanical, non-electronic deadbolt. Electronic alternatives include the Delaney KP400 Grade 2 electronic deadbolt with a programmable remote, the Codelocks CL2210 electronic mortise deadbolt, and for multifamily credential systems the Dormakaba Saffire LX-D RFID electronic deadbolt with BLE and electronic lock override and the Dormakaba Nova-D RFID multihousing smart deadbolt. All of these operate on the outside face, which the 8559 leaves without any operator.

It is part of Emtek's Knoxville series in the Brass collection, American Designer styling, so it lines up with the rest of the brass Knoxville knobs and levers on adjoining doors. Match the finish code across the openings, for example US10B oil rubbed bronze on all of them, and the thumbturn will read as part of the same set.