Get matched with top locksmiths in Cosby, TN

Q: What tool is used to remove door knobs?

• <div><p>Most door knobs can be removed with a Phillips or flathead screwdriver. If you don&rsquo;t have either of those available, a paper clip or small pin can sometimes work, but the extra effort may not be worth a quick trip to the hardware store.</p></div>

Q: Can someone hack a smart lock?

• <div><p>As with any computer, smart locks can be hacked by someone with the technical skills to do so, but most people do not have that ability, making smart locks relatively safe. If you have any concerns about a compromised smart lock, opt for an encrypted smart lock, change your Wi-Fi password, and make sure that you only give out your password to trusted family and friends. </p></div>

Q: Is it cheaper to fix a door lock or replace it?

• <div><p>The cost-effectiveness of fixing or replacing a door lock depends on the severity of the issue. Repairing a minor problem, such as loose screws or a need for lubrication, is usually cheaper than replacing the entire lock. However, <a href="https://www.angi.com/articles/change-door-locks-cost.htm">replacing the lock</a> if it is severely damaged, outdated, or lacks security features may be a better long-term investment. New locks often have improved security features, enhancing your property's safety. </p></div>

Q: What is the best lubricant for a door lock?

• <div><p>It is best to use a dry lubricant, such as a Teflon-based option, for door locks. Unlike popular oil-based lubricants, dry lubricants leave a non-stick, water-repellent coating that does not attract dust, dirt, and other debris. Using an oil-based lubricant can cause these particles to build up inside the lock, making it difficult to operate or even damaging the internal mechanism. You can find dry lubricants, some of which are made specifically for locks, at most hardware stores.</p></div>

Q: What is the best tool to remove a stripped bolt?

• <div><p>One of the best tools for removing a stripped bolt is a handy pair of locking pliers. Locking pliers can usually grip onto screws with a broken, rounded, or stripped head and lock in place so that you can loosen even the most stubborn bolt that would otherwise remain hopelessly jammed.</p><p> </p></div>

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Verified Reviews for Locksmith Service pros in Cosby, TN

*The Angi rating for Locksmith Service companies in Cosby, TN is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Locksmith Service needs.

*The HomeAdvisor rating for Locksmith Service companies in Cosby, TN is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Locksmith Service needs.

Last update on February 18, 2026

Reviewed in February 2026
Customer service was excellent. Wonderful communication before and during the job. True professionals who really care about their work and tree trimming. I would most certainly hire them again.
A Better Tree Service
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Reviewed in January 2026
My husband and I would 100% recommend Barrett Garage Doors. They went above and beyond to correct our garage door issues. Aside from doing a great job, they were professional, friendly, detailed, and timely. If you need garage doors installed or need garage doors repairs, these are your people!
Barrett Garage Doors
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Reviewed in April 2025
I would hire this pro back to do all my work that needs to be done. He is very professional and get the work done in a timely manner.
James's Handyman Service
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Reviewed in June 2024
Easy scheduling, top-notch craftsmanship and definitely appreciated the good communication.
Appalachian Carpenters
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Reviewed in June 2024
This is a new company just starting out. Great skill set with workers. At the time I hired them they lacked some equipment but have referred them to friends and have since resolved their equipment shortages. They were timely and efficient in getting the work done. Very friendly and...
Southern Boyz Tree Service
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Reviewed in May 2024
J-460034: Koko and Nick. Very professional service and very quick!
West Shore Home Knoxville
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Reviewed in April 2024
This is a company I would recommend highly. There ethics, trustworthiness, professionalism, and dependability is commendable. There easy to talk to and straightforward with what they must do.
Colossian Home Services LLC
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Reviewed in September 2023
This company was very professional and the service was great and he does what he says he will do would recommend to anyone
Summers Professional Tree Service LLC
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Reviewed in June 2023
Friendly, professional and completed the cleaning on time. Would recommend them to everyone.
DavisBlake Cleaning
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Reviewed in June 2022
very nice and neat with their work! worked efficiently and at a reasonable rate!
Pinette Lawn and Landscaping
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Find Locksmiths in Cosby

SafeStreets - ADT Authorized Provider

4.8(

320

)

Serving Cosby, TN and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"I called Alarm Protection Group AFTER my office was burglarized. Now I feel SAFE. William is great to work with. He's neat and tidy, prompt, presentable - not a butt-crack type of guy, and he doesn't leave a mess in his wake. He's also knowledgeable about the equipment and only uses high-quality products."

9 neighbors recently requested a quote

Recommended by94%of homeowners

Serving Cosby, TN and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"Walter and Glen at Protect Your Home Group with ADT are the best people to talk to in terms of security alarm. Being a locksmith myself I know how important it is to deal with the right people. I referred a lot of customers to them and so far they are happy with their service. I myself got one for my house. Thank you for a consistent service and great deal."

+35

80 neighbors recently requested a quote

Recommended by88%of homeowners

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Kam Tek

New to Angi

Serving Cosby, TN and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Good day my name is Cameron I’m a jack of all trades just a little working knowledge of many trades Gaines through growing up in a construction family always helping family and learning …. With over 20 years experience and a treasure trove of knowledge to access when needed at all times I’m very confident we can accomplish Amy project large or small you wish to accomplish.. \nThank you

6 neighbors recently requested a quote

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ROBELS FLOOR INSTALLATIONS LLC

5.0(

)

Serving Cosby, TN and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

We can install carpet roll and carpet tile, lvp and lvt, hardwood glued down and nailed down, vct. We do residential and commercial work.\nCall: (423) 540-2747 for English\nCall: 865-253-1460 for Spanish\n

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First Detect Security

5.0(

405

)

Serving Cosby, TN and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"We couldn't reach our installing company so we called Ken and he did a great job"

Recommended by100%of homeowners

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CUNNINGHAM LOCKSMITH & DIAGNOSTICS INC

5.0(

)

Serving Cosby, TN and surrounding areas

In business since 2012

Free estimates

Credit card accepted

Auto Lock & Key is a mobile locksmith service specializing in Automotive locks, keys and transponder systems.

Recommended by100%of homeowners

Serving Cosby, TN and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"I had a bit of trouble with my molding around the doors vs how the system was designed. The tech guy hung with me for 39 minutes until it was perfect. I called customer service a couple times after that with questions that came up. The customer service team are professional and knowledgeable."

Recommended by93%of homeowners

Serving Cosby, TN and surrounding areas

In business since 2007

Credit card accepted

"Excellent customer service. Self-installed security system and called customer service a couple times -- very helpful.
"

Compare our Compact Door Sensors to our Competitors

+16

Recommended by84%of homeowners

Serving Cosby, TN and surrounding areas

In business since 2018

Emergency services offered

Credit card accepted

"Great the work was done and neat, I will hire them again."

Recommended by96%of homeowners

Serving Cosby, TN and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

"The gentleman was very knowledgeable and got the job done in a timely manner,an also downloaded my printer onto my computer for me.Greatly appreacited it."

Helping a Victim who was being Cyber-stocked

Recommended by91%of homeowners

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Showing 1-10 of 81

Locksmiths questions, answered by experts

Most door knobs can be removed with a Phillips or flathead screwdriver. If you don’t have either of those available, a paper clip or small pin can sometimes work, but the extra effort may not be worth a quick trip to the hardware store.

As with any computer, smart locks can be hacked by someone with the technical skills to do so, but most people do not have that ability, making smart locks relatively safe. If you have any concerns about a compromised smart lock, opt for an encrypted smart lock, change your Wi-Fi password, and make sure that you only give out your password to trusted family and friends.

The cost-effectiveness of fixing or replacing a door lock depends on the severity of the issue. Repairing a minor problem, such as loose screws or a need for lubrication, is usually cheaper than replacing the entire lock. However, replacing the lock if it is severely damaged, outdated, or lacks security features may be a better long-term investment. New locks often have improved security features, enhancing your property's safety.

It is best to use a dry lubricant, such as a Teflon-based option, for door locks. Unlike popular oil-based lubricants, dry lubricants leave a non-stick, water-repellent coating that does not attract dust, dirt, and other debris. Using an oil-based lubricant can cause these particles to build up inside the lock, making it difficult to operate or even damaging the internal mechanism. You can find dry lubricants, some of which are made specifically for locks, at most hardware stores.

One of the best tools for removing a stripped bolt is a handy pair of locking pliers. Locking pliers can usually grip onto screws with a broken, rounded, or stripped head and lock in place so that you can loosen even the most stubborn bolt that would otherwise remain hopelessly jammed.

The Cosby, TN homeowners’ guide to locksmith services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

Angi
•
Mar 17, 2026Mar 17, 2026
How Much Does a Locksmith Cost? [2026 Data]
Wondering how much a locksmith costs? Discover locksmith prices, key cost factors, and tips to save on home lockout, rekeying, and installation services.
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How Much Does Lock Replacement Cost? [2026 Data]
Uncover the cost of lock replacement. Discover labor, materials, and cost-saving tips for your next lock replacement project.
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May 5, 2026May 5, 2026
How Much Does It Cost to Copy a Key? [2026 Data]
Wondering how much does it cost to copy a key? Discover prices, key types, and cost-saving tips to help you budget for your next key duplication.
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May 2, 2026May 2, 2026
How to Avoid Locksmith Scams: 9 Things to Look Out For
No one wants to get locked out, and locksmith scams make the situation even more unpleasant. You can find legitimate locksmiths by checking things like their phone number, car, and prices. Find out how to pick reputable locksmith companies here.
Jouviane Alexandre
•
May 3, 2026May 3, 2026
How to Pick a Lock (And When It's Time to Call a Locksmith)
Learning how to pick a door lock can help you get out of a bind when you lock yourself out of your home. Learn the most basic method with this guide.
Heather Ayer
•
May 22, 2026May 22, 2026
How to Find a Locksmith That’s Reliable: Top Tips on What to Look for
Need new locks or locked out? You probably have questions about finding a reliable locksmith. This guide can help you hire a professional you can trust.