Entry lock: (Front & Back) Entry locksets have push or push and turn button locking from the inside and key unlocking from the outside. Pushing or turning the button locks the outside knob or lever. A key is needed to enter from the outside unless the interior button is manually unlocked. The push or turn button locks the outside until the inside button is moved again.
Classroom lock: Classroom locksets always have the inside knob or lever unlocked. The outside knob or lever is locked and unlocked by key.
Vestibule lock: Vestibule locksets are always locked from the outside, and are unlocked with a key from the outside. The inside is always unlocked
Bathroom and bedroom privacy lock: (Bed & Bath) Privacy locksets are locked with an inside push-button. Turning the inside knob or lever releases the lock. A small screwdriver can be used as an emergency key, from the outside, if necessary.
Storeroom lock: Storeroom locksets are always locked from the outside, so always need a key in the exterior knob or lever lock to unlock from the outside. The inside lever is always unlocked.
Passage set: (Closet & Hall) Passage locksets keep doors firmly closed, but do not actually lock. Both knobs always turn free.
Cylindrical and Tubular Locksets and Leversets
Cylindrical and tubular locksets differ in several ways, the most important of which, to many purchasers, is price: tubular locksets are less costly. Not long ago, tubular locksets were also easier to install, but today’s standardized door preparation, using templates, means both styles are about equally easy to add to any ordinary door.
Locksets made in a drum style are cylindrical and tend to be less restrictive when operated from the inside—that is, the cylindrical lockset allows for one step egress.
Tubular locksets are easily identified by their three prongs, consisting of two posts and a spindle.
S. Parker locksets are available in grades 1, 2 and 3. The significant differences are manufacturing of a quality to withstand increased use and fire ratings, with the more durable being grades 1 and 2: grade 3 is designed to last a long time under standard use in residences, while grades 1 and 2 are for heavier commercial and residential use.
Cylinder Cross Reference
Arrow K2, K6
Corbin 59, A1
Falcon 1573, 1577
Lori Comp (SGT S, U Weslock, Harloc, Lori L200)
Russwin 981, 852
Additional Keyways Master and Grand Master Available Upon Request.
Non-Handed vs. Handed
All S.Parker Grade 1 and 2 cylindrical lever, and all knob locksets are non-handed. They can be used on right or left hand opening doors. Most Grade 3 locks are also non-handed. There are a few decorator levers that are specific to right or left hand door openings. They are noted appropriately.