By Kent · Lock Depot Staff Writer

The 6500 reads like a code. It is a room list.

The Sargent 6500 Series is a Grade 2 cylindrical lever lock. The part numbers look like a cipher: 28-65G04-KL-26D, 28-65G05-KL-26D, 28-65U15-KL-26D. They are not. The middle block is the function, and each function matches a kind of room. Read it once and the whole page of parts sorts itself.

We compared the 6500 against the 8200 mortise in our 6500 versus 8200 article. This one is for a person who has already chosen the 6500 and now needs the right function for the opening.

Breaking the number down

Sargent's listing breaks 28-65G04-KL-26D into four pieces. The 28 is the ANSI curved lip strike, number 808. The 65G04 is the series and function. The KL is the L lever trim. The 26D is satin chrome, 626. Everything in the 6500 family is ANSI/BHMA A156.2 Grade 2, on a standard ANSI 161 prep, so it drops into an existing cutout.

Change the function block and you change what the lock does at the door. Everything else stays.

The five you will order most

Function code	Room	What the outside lever does	Inside
65G04	Storeroom or closet	Always locked. Key for every entry.	Free for exit
65G05	Entrance or office	Key locks and unlocks it	Free, push-button locking
65G37	Classroom	Locked until key unlocks it, relocks when the door closes	Free for exit
65U15	Passage	Always unlocked	Always unlocked
65U65	Privacy	Emergency key override from outside	Thumbturn locks the outside lever

The descriptions are the listings' own. We have not paraphrased them past that.

65G04: storeroom or closet

The outside is locked all the time. Nobody gets in without a key, and nobody can leave it unlocked by accident. That is why it is the default for a janitor's closet, an electrical room, a records room. The inside is always free for exit. The listing is clear: key required for every entry. The same split on the 10 line is in the Sargent 10 line storeroom versus office article. Our 28-65G04-KL-26D and the 28-65G04-KL-26 are both in the family.

65G05: entrance or office

This is the one a person can leave open for the day and lock at night. The key operates the outside lever, and the inside has a push-button for locking. Inside is always free. It is the function for a manager's office, a front office, a conference room that is sometimes private. The mistake is putting it on a storeroom, where a push-button leaves the door unlocked for anyone who forgets. The matching part is the 28-65G05-KL-26D.

65G37: classroom

The classroom function relocks. The listing says the outside lever stays locked until unlocked by key, then relocks automatically when the door closes. The teacher unlocks it in the morning and the door locks itself behind every closing. The inside is always free. It is the one a school asks for by name, because the door does not stay unlocked when a person forgets to lock it. Do not put it on a door where staff will not carry a key.

65U15 and 65U65: no key to carry

The 65U15 passage has no lock. Both levers are always free from both sides, and the listing says no cylinder is required. It is a latch with a lever. Use it for a corridor door, an empty closet, a pair of rooms that connect.

The 65U65 privacy locks from the inside with a thumbturn, and an emergency key overrides it from the outside, per the listing. No cylinder is needed in the box. It is the restroom and the changing room. It is not a security lock. Anyone with the emergency key opens it.

What is in the box, and what is not

The functions that take a key ship with a Sargent 6-pin conventional cylinder, LA keyway standard, and two keys. That is the G04, G05 and G37. If you want the lock on an interchangeable core system, the standard cylinder is not it, and you should call us with the building's keyway. We are not going to guess at that from here.

There are also U93 and U94 single and double lever pull parts in the family, in the same finishes. The listings do not describe what those functions do, so we will not either. If you need one, call and we will confirm the function against the Sargent catalog. Some 6500 parts start with 2860 instead of 28, and we do not have the factory's definition of that prefix. Match it to the old lock.

Before you order

Measure the door thickness and the backset on the old lock. Look at the strike: a 28 is the curved lip, number 808. Check the hand. If the old lock is a Schlage or Arrow cylindrical, the listing's own advice is to verify the door prep first. The 161 cutout is a standard, and it is a good bet, but a door that has been drilled twice is not a standard door.

Common questions

Which Sargent 6500 function is storeroom?

65G04. The outside is always locked and a key is required for every entry.

Which is the classroom function?

65G37. It relocks automatically when the door closes.

Does the privacy lock need a key?

No cylinder is required. It has a thumbturn inside and an emergency key override outside.

What grade is the 6500?

ANSI/BHMA A156.2 Grade 2, per the listings.

Does it fit an existing cutout?

The listings say standard ANSI 161 prep, so it drops into existing cutouts.

The rest of the line is on our Sargent page. Give us the room and the key system and we will name the part. The same function split on the seven line is in our 7 line function article.