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by Kayako
Commonly used terms in the Lock Industry
Backset Distance measured from the edge of a door to the center of the cross bore.
Bore (Cross Bore) The hole drilled through the door - most commercial and residential locksets use a 2 1/8" Diameter, but not always - check your installation templates.
What is KA, KD/KR, or MK ? KA - Keyed Alike (Same key fits all). Supplied locks will be keyed alike - Keyed Alike offers the convenience of using the same key on all your locks. When ordering multiple locks, each lock is normally supplied with 2 keys and all the keys supplied with these locks will be the same. When purchasing one lock keyed alike, more can be ordered (Keyed Alike/KA) at a later date with the same key number. (Make sure you record the key number.)
KD - Keyed Different or Random. Each manufacturer has a limited number of KD codes, while KR-Keyed Random might be more appropriate, the number of different key codes varies widely by manufacturer, and lock design. KD is the industry nomenclature regardless of key differs.
- Master Keyed (Locks keyed different (separately), or in sets - usually 2 keys each), and a Master Key that operates all locks. Example: You have 20 padlock all with different keys (2 individual keys per lock), and you have a Master Key that opens all locks - this is referred to as KD/MK, or Keyed Different and Master Keyed.
What is the difference between locks marked 2194 KD, and 2194 KA? There is no physical difference. The locks are the same dimensions and are exact replacements for each other. The only difference is how the locks are keyed, and usually only applies if ordering multiple locks. If you have 4 file cabinets and would like them all to use the same key then you would need to order the KA (Keyed Alike) part. If you would like all 4 file cabinets to use different keys then your would need to order the KD (Keyed Different) part.
If you only need 1 lock you can order the KA or the KD part - both will work for your application. If you think you might need another lock later, keyed alike, make sure you order the KA part now.

The above information applies to many different locks found on the website, not just the 2194 series parts - the 2194 series parts are simply used as an example.
Finish Codes 605, 609, US3, US5, Duro, AL ??