Smart Lock Body Compatibility: 68, 5050, 85 & Deadbolt
Which lock body does your door use? This guide explains the lock bodies we supply and how to confirm that a smart lock fits your market and door type.
Lock body types and the models that use them
| Lock body | Typical use | Models | Notes |
|---|---|---|---|
| 68 lock body | Fully automatic face recognition locks, CNC premium series and handle locks | A60S, A57S, A20S, A67S, B65S, AC26S, AC29S, AC38S, B7, T6S | Rear lock can be changed to 6085, 6090 or 5072 on request; CNC-engraved rear lock available on the AC series. B7 can use a true mortise body or a bottom-insert body. |
| 5050 lock body | Wooden-door handle locks | B6, B36 | Anti-pry, anti-pull, anti-saw and anti-theft body for wooden doors. |
| 85 lock body | Aluminium-frame / thermal-break door locks | B33, B35, B37, B38, B41S, B46, B46F, B59F | Models available on request. Send photos of the door profile. |
| Single-tongue / deadbolt body | American-style deadbolt, ball and small locks | D3, D03S, D03T, D12, D13, D02, D06, D09 | D3 is designed for door thickness 35-50 mm. Thicker doors on request. |
Compatibility is confirmed per order from photos or drawings of your door and existing lock body. We only list combinations that appear in our product data.
How mortise lock body sizes are named
Bodies are commonly named by backset and centre distance, for example 6068 for a 60 mm backset and 68 mm centre distance, and 6085, 6090 and 5072 in the same way. Our “68 lock body” refers to this family. Always confirm with a drawing or photo, because the same label can differ between manufacturers.
Four things to send for a compatibility check
Door type and thickness
Wooden, metal, aluminium or glass, and the thickness in millimetres.
Existing lock body
Photo of the body and faceplate, plus backset and centre distance if known.
Market and standard
Target country, door standard and handing (left or right).
Features and platform
Unlock methods, language, Tuya / TTLock / Matter and OEM branding.
Step by step: how to photograph your door and take the five measurements. Or try the free Lock Body Finder.
Typical points to check by region
Europe and Middle East
Mortise doors with euro-profile cylinders are common. Confirm backset, faceplate size, door handing and cylinder length. The photo of our 68 body shows the euro-profile cylinder opening.
Russia and CIS
Metal entrance doors and wooden interior doors are both common. Send the door thickness and the lock body already installed; our 68 body models and 5050 wooden-door models cover the usual cases.
North America and rentals
American-style deadbolts such as the D3 replace ball locks and old deadbolts on doors of 35-50 mm. Confirm hole layout with a photo before ordering.
Read more about lock bodies and fit
GA 374-2019 Explained: China’s Electronic Anti-Theft Lock Standard for Smart Lock Buyers
Some smart lock spec sheets mention GA 374-2019. Here is what this Chinese public security industry standard is, what it covers and how buyers should use…
Lock Body Size Conversion Table: 6068, 6085, 5072, DIN 55/72/8 and US Backsets
A one-page reference for comparing lock body naming across China, Europe and North America, and for matching each to our smart lock options.
Smart Locks for Wooden Interior Doors Worldwide: 5050 Bodies, Backsets and Handle Locks
Wooden interior doors use narrow mortise bodies with different backsets from country to country. See how to check fit and which handle locks we offer.
Lock body compatibility questions
What does "68 lock body" mean?
It is the mortise lock body family used by our fully automatic and handle models. Bodies are usually named by backset and centre distance (for example 6068). Send a photo of your body and we will confirm the match.
Can I change the rear lock body?
On selected models the rear lock can be changed to 6085, 6090 or 5072 on request. A CNC-engraved rear lock is available on the AC series.
Do your smart locks fit metal, wooden, aluminium and glass doors?
Yes, through different models: handle locks and dual-screen locks for wooden and metal doors, B6 and B36 for wooden doors, 85-body models for aluminium-frame doors and a glass-door series. Door thickness and profile must be confirmed first.
Can you supply the lock body together with the smart lock?
Yes, models are supplied with the matching lock body. Specify the body type and rear-lock option when you request a quotation.
Not sure which lock body you need?
Send photos of your door and current lock to Mag on WhatsApp. We will confirm a matching model.