Mul-T-Lock Lock Services in Severn & Central Maryland
Mul-T-Lock makes high-security cylinders and deadbolts with telescopic pin designs and patented keys that are hard to pick and can’t be freely copied. They are a popular upgrade for front doors and business entrances. 911 Locksmith installs and services Mul-T-Lock hardware across Central Maryland.
- 4.9 on Google
- Licensed, bonded and insured
- Serving Maryland since 2013
- We come to your address
Mul-T-Lock at a glance
- Found on
- Homes, apartments and businesses
- Known for
- High-security cylinders and deadbolts with patented keys
- What we do
- Installation, repair, rekeying, key control
Mul-T-Lock Locks Installed, Repaired & Rekeyed
We fit new Mul-T-Lock deadbolts and cylinders, retrofit them into existing locks, and repair or rekey Mul-T-Lock systems for homes and businesses.
Mul-T-Lock Products We Install & Service
High-security locks
Mul-T-Lock deadbolts and rim locks we install on homes and businesses.
Hercular Deadbolt
Jimmy Proof Rim Lock
Cronus Lock
CLIQ Electronic Cylinder
Cylinders
Mul-T-Lock cylinders we fit into your existing locks for better key control.
Mortise Cylinder
Rim Cylinder
Key-in-Knob Cylinder
Anti-Ligature Lock
Product photos: Mul-T-Lock. Don't see your model? Call us. We work on most Mul-T-Lock hardware.
Our Mul-T-Lock Lock Services
Mul-T-Lock Installation
Mul-T-Lock deadbolts and cylinders installed on entry doors for stronger resistance to picking and forced entry.
High-security locks →Mul-T-Lock Repair
Sticking, stiff or damaged Mul-T-Lock locks diagnosed and repaired on site.
Lock repair →Mul-T-Lock Rekeying
Rekeying and cylinder changes when keys are lost, so old keys stop working.
Rekeying →Commercial Cylinder Upgrades
Mul-T-Lock cylinders retrofitted into storefront, office and mortise locks.
Commercial high-security locks →Key Control & Master Keys
Key systems where copies are only made for authorized people, for offices and rental properties.
Master key systems →Lockouts & Broken Keys
Locked out of a Mul-T-Lock door or a key broken off in the cylinder? We help.
Broken key extraction →Common Mul-T-Lock Lock Problems We Fix
- Key sticks or is hard to turn: wear or dirt in a precision cylinder. See key hard to insert.
- Deadbolt won't lock: a strike or door alignment problem. See deadbolt won’t turn.
- Too many copies of the key: move to a controlled key system. See master key systems.
- Upgrading a basic deadbolt: replace it with a Mul-T-Lock high-security model. See high-security locks.
How A Mul-T-Lock Service Visit Works
Call or Book Online:
Tell us the lock model if you know it and what is wrong, and we schedule a time that suits you.
On-Site Check:
The technician inspects the lock, cylinder and door to find the cause, not just the symptom.
Upfront Options:
You get a clear choice between repairing, rekeying or replacing before any work starts.
Fix & Test:
We complete the work, test every key and function, and show you how the lock should operate.
Mul-T-Lock is a trademark of its owner. 911 Locksmith is an independent locksmith and is not an authorized dealer of, or affiliated with or endorsed by, Mul-T-Lock. The logo and product photos belong to Mul-T-Lock and are shown only to identify the products we service.
Mul-T-Lock Lock Service Near You
Hours
| Sunday to Friday | 7:30 AM to 11:30 PM |
| Saturday | 6:30 AM to 11:30 PM |
Call and we'll tell you how soon a technician can get to you.
Based in Severn, we cover communities across Central Maryland, including:
FAQs About Mul-T-Lock Lock Service
Can Mul-T-Lock keys be copied anywhere?
No. Mul-T-Lock keys use patented profiles, and copies are made only for authorized holders. That is a large part of the security they offer.
Can you fit a Mul-T-Lock cylinder into my existing lock?
Often, yes. Many deadbolts and mortise locks can take a Mul-T-Lock cylinder, which upgrades security without replacing the whole lock.
Do you repair Mul-T-Lock locks?
Yes. We diagnose stiff or damaged Mul-T-Lock locks and repair or replace the cylinder as needed.
Is Mul-T-Lock good for a front door?
Yes. It is a common high-security upgrade for main entry doors where pick and drill resistance matter.
Are you a Mul-T-Lock authorized dealer?
No. 911 Locksmith is an independent local locksmith. We install and service Mul-T-Lock locks, but we are not affiliated with or endorsed by Mul-T-Lock or its parent company.
Other lock brands we service
What customers say about 911 Locksmith
Google reviews from homeowners, drivers and businesses across Maryland.

Need Help With Mul-T-Lock Locks?
For Mul-T-Lock high-security locks in Central Maryland, call 911 Locksmith or book online.
