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Cylindrical Knobs

About this Category

Cylindrical knobs can be very practical in certain applications to provide for easy access of an entrance. Select from our large selection of excellent quality knob sets, the one that best suits your door’s needs.

Jump to a brand:

Schlage logo Sargent logo Corbin Russwin logo

Schlage

A Series Knob Locks

A Series Knob Locks

by Schlage
  • Grade 2
    For standard duty commercial /heavy duty residential applications.
    Locks are available in different grades
    which relate to their construction and durability.
    These grades are a measure of application suitability.
    Standard duty commercial and heavy duty residential buildings, interior and exterior doors
  • Healthcare
  • Hospitality
  • Office / Retail
  • Apartments/Residential housing
view Schlage A10S Standard Duty Commercial Passage Knob Set - Cylindrical Knobs

Schlage - A10S Standard Duty Commercial Passage Knob Set

Multiple Options and Finishes Multiple Options

Starting at: $77.00

This Schlage A10S knob set can be used in standard duty, commercial applications, or in heavy duty, residential applications. The Schlage A series knobs are constructed with excellent quality materials which will allow them to stand up to constant use and abuse. The A10S is a passage function lock where both knobs are always unlocked.

  • Usage: Standard Duty
  • Function: Passage
    Passage
    Inside
    Passage
    Outside
Passage
  • Knob always retracts latch
  • Can never be locked

Inside

Passage
  • Knob always retracts latch
  • Can never be locked

Outside

view Schlage A40S Standard Duty Commercial Privacy Knob Lock - Cylindrical Knobs

Schlage - A40S Standard Duty Commercial Privacy Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $77.00

This Schlage A40S is a privacy/bathroom function quality knob lock that is designed for use in standard duty, commercial applications and heavy duty residential application. The Schlage A series knob sets meet ANSI/BHMA A156.2 4000 Grade 2 strength and operational requirements and it is UL listed for 3 hour fire doors.

Bathroom/Privacy
  • Push button locks outside knob
  • Turning knob or closing door unlocks outside knob

Inside

Bathroom/Privacy
  • Locked by button on inside knob
  • Turning knob or closing door unlocks outside knob

Outside

view Schlage A53PD Standard Duty Commercial Entrance Knob Lock - Cylindrical Knobs

Schlage - A53PD Standard Duty Commercial Entrance Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $136.00

This Schlage A53PD is an entrance function knob lock with a turn/push button on the inside knob, and keyed on the outside knob. It includes a cylinder with a C keyway and 2 keys. The A53PD is a non-handed product which can be adjusted to fit doors that their thickness measures between 1-3/8" and 1-7/8".

Entrance/Office
  • Button locks the outside knob
  • Inside knob is always free for immediate exit

Inside

Entrance/Office
  • Remains locked until inside button is manually unlocked
  • Door opened by key

Outside

view Schlage A70PD Standard Duty Commercial Classroom Knob Lock - Cylindrical Knobs

Schlage - A70PD Standard Duty Commercial Classroom Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $136.00

This Schlage A70PD classroom function standard duty, commercial / heavy duty, residential knob lock is a high quality, A series lock that is designed to withstand abuse and constant use. This lock can be ordered to fit a 2-3/4" backset or a 2-3/8" backset and it includes a square cornered T-strike that measures 1-1/8" by 2-3/4".

  • Usage: Standard Duty
  • Function: Classroom
    Classroom
    Inside
    Classroom
    Outside
Classroom
  • Always unlocked
  • Can only be locked/unlocked by key in outside knob

Inside

Classroom
  • Door opened by key

Outside

view Schlage A80PD Standard Duty Commercial Storeroom Knob Lock - Cylindrical Knobs

Schlage - A80PD Standard Duty Commercial Storeroom Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $136.00

This Schlage A80PD standard duty commercial / heavy duty residential knob lock operates with the storeroom/closet function. The outside knob remains locked at all times and requires a key for entry, and the inside knob is always free. This lock is available in Plymouth style (PLY) and in Orbit style (ORB).

  • Usage: Standard Duty
  • Function: Storeroom
    Storeroom
    Inside
    Storeroom
    Outside
Storeroom
  • Knob never locked
  • Door opened by knob

Inside

Storeroom
  • Knob locked at all times
  • Door opened by key

Outside

Sargent

6 Line Knob Locks

6 Line Knob Locks

by Sargent
  • Grade 2
    For standard duty commercial /heavy duty residential applications.
    Locks are available in different grades
    which relate to their construction and durability.
    These grades are a measure of application suitability.
    Standard duty commercial and heavy duty residential buildings, interior and exterior doors
  • Offices/Warehouses
  • Apartment buildings
  • Hotel/Motel/Retail
  • Residential housing
view Sargent 6G05 6 Line Entrance Knob Lock - Cylindrical Knobs

Sargent - 6G05 6 Line Entrance Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $167.00

This Sargent 6G05 6 Line is a knob lock that is fashionably designed and made to fill the needs of locks for homes, hotels, apartments and commercial buildings. It is standard duty, and operates as an entrance/office function lock. Supplied in O style rose and B style knob.

Entrance/Office
  • Button locks the outside knob
  • Inside knob is always free for immediate exit

Inside

Entrance/Office
  • Remains locked until inside button is manually unlocked
  • Door opened by key

Outside

view Sargent 6G37 6 Line Classroom Knob Lock - Cylindrical Knobs

Sargent - 6G37 6 Line Classroom Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $167.00

This Sargent 6G37 is a lock from the Sargent 6 Line series knob locks, which serve as standard duty locks suited for hotels, homes and apartments and commercial buildings. This specific model is lockable by key on the outside and always free on the inside, known as the classroom function.

  • Usage: Standard Duty
  • Function: Classroom
    Classroom
    Inside
    Classroom
    Outside
Classroom
  • Always unlocked
  • Can only be locked/unlocked by key in outside knob

Inside

Classroom
  • Door opened by key

Outside

view Sargent 6U15 6 Line Passage Knob Set - Cylindrical Knobs

Sargent - 6U15 6 Line Passage Knob Set

Multiple Options and Finishes Multiple Options

Starting at: $107.00

This Sargent 6U15 is a passage function knob set. It is constructed for standard duty applications where no locking system is necessary since this set is supplied without a cylinder to keep the inside and outside knobs free at all times.

  • Usage: Standard Duty
  • Function: Passage
    Passage
    Inside
    Passage
    Outside
Passage
  • Knob always retracts latch
  • Can never be locked

Inside

Passage
  • Knob always retracts latch
  • Can never be locked

Outside

view Sargent 6U65 6 Line Privacy Knob Set - Cylindrical Knobs

Sargent - 6U65 6 Line Privacy Knob Set

Multiple Options and Finishes Multiple Options

Starting at: $121.00

This Sargent 6U65 is a 6 Line knob set designed for privacy applications such as bathrooms. A push button on the inside knob locks the outside knob and is released when the door is closed or the inside knob is rotated. It is supplied with an emergency release on the outside knob which can be operated with the use of a blade screwdriver.

Bathroom/Privacy
  • Push button locks outside knob
  • Turning knob or closing door unlocks outside knob

Inside

Bathroom/Privacy
  • Locked by button on inside knob
  • Turning knob or closing door unlocks outside knob

Outside

view Sargent 6G04 6 Line Storeroom Knob Lock - Cylindrical Knobs

Sargent - 6G04 6 Line Storeroom Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $167.00

This Sargent 6G04 6 Line standard duty knob lock is constructed to suit the lock needs in fine homes and apartments, elegant hotels, as well as in commercial buildings. This lock is a storeroom or closet function lock which is always locked on the outside, and always free on the inside.

  • Usage: Standard Duty
  • Function: Storeroom
    Storeroom
    Inside
    Storeroom
    Outside
Storeroom
  • Knob never locked
  • Door opened by knob

Inside

Storeroom
  • Knob locked at all times
  • Door opened by key

Outside

Corbin Russwin

CK4400 Series Knob Locks

CK4400 Series Knob Locks

by Corbin Russwin
  • Grade 2
    For standard duty commercial/heavey duty residential applicatiions.
    Locks are available in different grades
    which relate to their construction and durability.
    These grades are a measure of application suitability.
    Standard duty commercial and residential buildings, interior and exterior doors
  • Offices
  • Apartment buildings
  • Hotel/Motel
view Corbin Russwin CK4451 Standard Duty Commercial Entrance/Office Knob Lock - Cylindrical Knobs

Corbin Russwin - CK4451 Standard Duty Commercial Entrance/Office Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $161.00

This Corbin Russwin CK4451 is a standard duty entrance/office function cylindrical knobset which is ideally suited for quality residential applications as well as light commercial areas. This product meets ANSI/BHMA A156.2 series 4000 Grade 2 requirements.

Entrance/Office
  • Button locks the outside knob
  • Inside knob is always free for immediate exit

Inside

Entrance/Office
  • Remains locked until inside button is manually unlocked
  • Door opened by key

Outside

view Corbin Russwin CK4457 Standard Duty Commercial Storeroom Knob Lock - Cylindrical Knobs

Corbin Russwin - CK4457 Standard Duty Commercial Storeroom Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $161.00

This Corbin Russwin CK4457 is a Grade 2 quality commercial and residential knobset. Storeroom or closet function requires a key for entry and the inside knob is always free. The latch is made of stainless steel material for long life. It has a 1/2" throw and 2-1/4" x 1-1/8" front.

  • Usage: Standard Duty
  • Function: Storeroom
    Storeroom
    Inside
    Storeroom
    Outside
Storeroom
  • Knob never locked
  • Door opened by knob

Inside

Storeroom
  • Knob locked at all times
  • Door opened by key

Outside

view Corbin Russwin CK4455 Standard Duty Commercial Classroom Knob Lock - Cylindrical Knobs

Corbin Russwin - CK4455 Standard Duty Commercial Classroom Knob Lock

Multiple Options and Finishes Multiple Options

Starting at: $161.00

This Corbin Russwin CK4455 is classroom function cylindrical knobset which can be locked or unlocked with the use of a key on the outside knob, while the inside knob remains free at all times. This lockset is supplied with a 2-3/4" standard backset and it can be special ordered with other backsets as well.

  • Usage: Standard Duty
  • Function: Classroom
    Classroom
    Inside
    Classroom
    Outside
Classroom
  • Always unlocked
  • Can only be locked/unlocked by key in outside knob

Inside

Classroom
  • Door opened by key

Outside

view Corbin Russwin CK4410 Standard Duty Commercial Passage Knob Set - Cylindrical Knobs

Corbin Russwin - CK4410 Standard Duty Commercial Passage Knob Set

Multiple Options and Finishes Multiple Options

Starting at: $116.00

This Corbin Russwin CK4410 is a passage function, standard duty knobset, suitable for standard commercial and residential applications such as fine homes, apartments, motels and offices. The knob on the inside and the outside are always free.

  • Usage: Standard Duty
  • Function: Passage
    Passage
    Inside
    Passage
    Outside
Passage
  • Knob always retracts latch
  • Can never be locked

Inside

Passage
  • Knob always retracts latch
  • Can never be locked

Outside

view Corbin Russwin CK4430 Standard Duty Commercial Privacy Knob Set - Cylindrical Knobs

Corbin Russwin - CK4430 Standard Duty Commercial Privacy Knob Set

Multiple Options and Finishes Multiple Options

Starting at: $127.00

This Corbin Russwin CK4430 is a Grade 2, standard duty commercial/residential knobset. This product is available with several different finishes and with various knob styles. Its privacy function enables a pushbutton on the inside to lock the outside lever, which can than be unlocked by rotating the inside knob or by closing the door.

Bathroom/Privacy
  • Push button locks outside knob
  • Turning knob or closing door unlocks outside knob

Inside

Bathroom/Privacy
  • Locked by button on inside knob
  • Turning knob or closing door unlocks outside knob

Outside

More About Cylindrical Knobs

Where cylindrical knobs are preferred over cylindrical levers for their style of function, Qualified Hardware offers a variety of options to choose from. We carry knob locks from popular brands such as Sargent, Schlage and Corbin Russwin, to provide you with only the best of the best.

Cylindrical knobs are available with various door functions which determine how the knob operates. Whether with a key on the outside only, a key on both sides, or none at all, each function will serve a different purpose. Knobs come in passage function, privacy function, storage function, entrance function as well as other options that will suit the needs of your entrance. Browse through our selection of knobs and use the detailed description for each item to help you determine which lock is right for you.

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