It's cut to the C keyway with 6 pins, so it keys into an existing Schlage C system using the same key blanks and pinning your locksmith already stocks. Keyed different means each cylinder ships on its own key change, so if you need these to run on a building master or all match each other, that's keying work to be specified separately, not something this cylinder arrives with.

Yes. It's a replacement cylinder for a keyed lever, so you swap the cylinder and leave the lock chassis, lever and rose on the door. That keeps the existing prep and the existing lever finish untouched. A 6-pin C keyway cylinder like this also lets you pull an unknown or lost-key cylinder off a door and put the opening back on keys you control.

Key-in-lever cylinders are not universal across brands; the retainer, tailpiece and cylinder body vary by manufacturer, so a Design Hardware cylinder is meant for Design Hardware lever trim. For other brands, order the cylinder built for that lock: the Kaba Ilco 1579 is the knob and lever cylinder for Sargent, and the Falcon A23161-05 G is the key-in-lever cylinder for the Falcon RU/T series in the G keyway. The Kaba Ilco 1539 is a universal key-in-knob and lever cylinder if you are covering mixed trim.

No. A small format interchangeable core system uses a figure-eight core pulled with a control key, and a conventional 6-pin C keyway cylinder like this one won't drop into that housing or run on your control key. Stay on the IC platform: the BEST 1C 5-pin core or the 1CB 150 Series interchangeable core keep the opening on your existing control-key program. Mixing a conventional cylinder onto an IC facility breaks the one thing IC buys you, which is rekeying without a screwdriver.

The Falcon A23161-05 G is a key in lever cylinder in the RU/T Series with a 6-pin G keyway, keyed different, and it ships with 2 cut keys. It is the same class of part as the Design Hardware key in lever cylinder, 6 pin, C keyway, keyed different - a cylinder that drops into the lever trim rather than a mortise or rim housing - with the keyway being the point of difference. If the building is already keyed to a Schlage C system, stay with the C keyway version; if the site is on a Falcon G system, the A23161-05 G is the one that will accept the existing keys.

A key in lever cylinder will not thread into a mortise lock case. For a C keyway mortise application, the Detex MC65 is a mortise cylinder with a Schlage C keyway, 1-1/8 inch, 6-pin commercial grade, so it keys to the same C system as a 6 pin C keyway key in lever cylinder while fitting the mortise housing. Confirm the cam the mortise lock requires before ordering, since the cam is what drives the lock body.

They mount in completely different places. The Design Hardware key in lever cylinder is a 6 pin, C keyway cylinder that installs into the lever trim of a lockset. The Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and 2 keys, and the Schlage 20-022 is the same rim cylinder with a horizontal tailpiece cam; both mount through the door and drive a rim exit device or rim lock by way of that tailpiece. If the hardware on the door is an exit device, the rim cylinder is the correct part and the tailpiece orientation decides which of the two Schlage numbers you need.

An interchangeable core setup is the alternative. The Schlage Commercial 20-057-C is a full size interchangeable core cylinder in the C keyway, finished 643E Aged Bronze, and the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam and 2 keys that accepts a core. With an interchangeable core, a control key pulls the core out and a new core goes in, so tenant turnover is handled at the door in seconds. A keyed different key in lever cylinder like the Design Hardware 6 pin C keyway unit is pinned as a fixed cylinder instead, so rekeying means taking the cylinder to the bench. The C keyway is common to both paths, which keeps a facility on one key system while it converts.

It will not. An Adams Rite MS1847 deadlock takes either a mortise cylinder or a cylinder pull: the Adams Rite 4036 is a mortise cylinder with five-pin security, Grade 1, in the 4036 Series with a 1/2 inch minimum door thickness, while the 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws are both designed for use with the MS1847 deadlock/deadlatch. For a wood door, the 4026 five pin tumbler cylinder pull is designed for the Adams Rite 5017 wood door deadlock/deadlatch. A key in lever cylinder is built for the lever trim of a lockset and has nowhere to mount in a narrow stile storefront.

Deadbolts take their own cylinder. The Kaba Ilco 1549 Series is a key-in-deadbolt cylinder, and the Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts. For handleset and deadbolt outside cylinder work, the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, and the Medeco 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder. The Design Hardware key in lever cylinder is a lever cylinder and will not serve a deadbolt opening even though both are keyed parts.

Each cylinder comes on its own unique key, so one key opens one door and no others. For an apartment turnover or a set of tenant doors where nobody should cross-open, that is what you want. If you are standardizing a floor or a building so one key runs several openings, keyed different is the wrong specification, and keyed alike or a master keyed set has to be called out on the order.

No. A keyed lever cylinder drives the lock chassis through the lever trim and won't serve either of those. A deadbolt takes a key-in-deadbolt cylinder, such as the Kaba Ilco 1549. An exit device takes a rim cylinder with the correct tailpiece, such as the Schlage 20-021 with a vertical tailpiece cam or the 20-022 with a horizontal one. Getting the tailpiece orientation right on a rim cylinder matters as much as the keyway.

No. The BEST 1C Series is a standard 5-pin cylinder core, and the BEST 1CB is a Peaks 150 Series interchangeable core cylinder - both are cores that seat inside a BEST figure-eight housing and are removed with a control key. The Design Hardware key in lever cylinder is a complete 6 pin, C keyway cylinder that installs directly in the lever, with no separate housing. Ordering a core for a lockset that was never prepped for interchangeable core leaves you with a part that has nothing to seat into.

Kaba Ilco builds universal replacements for this exact situation. The 1539 Series is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, and the 1579 is a knob and lever cylinder made for Sargent locksets. All three are aimed at swapping the cylinder out of existing knob or lever hardware, the same job the Design Hardware key in lever cylinder does. Where the Ilco parts are built to cover a range of lock brands, the Design Hardware unit is a 6 pin C keyway cylinder keyed different, so match the choice to whether you are keying into an existing C system or fitting a specific manufacturer's lever.

Corbin Russwin covers mortise on Grade 1. The 1000 Grade 1 Series mortise cylinder is 1-1/2 inch with an A02 straight cam, the CR1070 Grade 1 Series is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, and the 1080 Grade 1 Series is a 1-1/2 inch LFIC mortise cylinder, 6-pin, for Schlage L9000 mortise locks with an A01 cam. Cam style and cylinder length are the two dimensions that decide which of these fits your lock case. The Design Hardware 6 pin C keyway unit is a key in lever cylinder, so it serves cylindrical lever trim rather than a mortise case.

The BEST 12E Series dummy rim cylinder with 1-5/32 inch diameter is the part for that - it presents the face of a cylinder without functioning as one, which suits an inactive leaf or a matched pair of doors where only one side is keyed. A Design Hardware key in lever cylinder is a working 6 pin C keyway cylinder keyed different, so it is the choice on any leaf that actually has to lock and unlock.

The BEST 1CDF is a drill resistant preferred patented interchangeable core, 7-pin, brass, in the 150 Series - patented keyway control and drill resistance in a core format, aimed at openings where key duplication and attack resistance are both in the spec. The Design Hardware key in lever cylinder is a 6 pin C keyway cylinder keyed different, a conventional standard keyway part for general lever trim replacement. Choose based on whether the opening is under a restricted key policy or is standard commercial traffic.

The Design Hardware key in lever cylinder is made in US3 Bright Brass, US4 Satin Brass, US10B Dark Bronze, US15 Satin Nickel, US26 Bright Chrome, and US26D Satin Chrome, so a cylinder can be brought to the finish already running through the building. Comparable cylinders are finish-specific by part number rather than selectable - the Schlage 20-057-C, for instance, is a C keyway full size interchangeable core in 643E Aged Bronze. When standardizing a floor, pick the finish code off an existing lever face and order the cylinder to it.

Yes, for a rim exit device you want a rim cylinder. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece, and the Schlage 20-021 and 20-022 are 6-pin rim cylinders differing in whether the tailpiece cam is vertical or horizontal. The tailpiece length and orientation have to suit the device, which is the measurement to take before ordering. A key in lever cylinder threads into lever trim and has no tailpiece to reach the exit device chassis.

Six pin chambers give a larger set of possible key changes than five, which is why commercial keying programs run 6-pin: a master keyed system eats through key changes fast, and the extra chamber is what keeps a building's worth of unique changes available. Several cylinders in this class are 5-pin, including the Adams Rite 4036 mortise cylinder and the BEST 1C core. If you are extending an existing 6-pin C system, match the pin count or the keys won't operate.

Emtek hardware takes its own cylinder parts. The Emtek CY4 cylinder is sold each, the Medeco 1065244 is a 5-pin rim lazy motion rim type cylinder with an Emtek tailpiece, and the Medeco 1065140 is a 5-pin retrofit cylinder that covers the Emtek handleset and deadbolt outside cylinder. Those are built to the tailpiece and prep Emtek uses. The Design Hardware key in lever cylinder is a 6 pin C keyway commercial lever cylinder and is chosen when the lockset it is going into takes that cylinder format.