Deadbolt Lock Guide: Single, Double Cylinder and Thumbturn Types, Bolt Throw and Strike Plate Strength, Door and Frame Preparation, Smart Deadbolts, Indicative Rates, Fitting and Safety Notes for Exits in Pakistan
A deadbolt lock throws a solid steel bolt into the frame that cannot be pushed back by force, which makes it much stronger than a spring latch alone. Prices run from about PKR 1,200 to PKR 12,000. This page covers single, double cylinder and thumbturn types, bolt throw and strike plate strength, door and frame preparation, smart deadbolts, rates, fitting and exit safety. For related pages see mortise lock, main door locks and digital door lock.
Single, double and thumbturn
- Single cylinder. Key outside, thumbturn inside, easiest in an emergency.
- Double cylinder. Key on both sides, risky because it can trap people.
- Keyless deadbolt. Code or fingerprint, see digital door lock.
- Vertical deadbolt. Bolt goes up or down, hard to pry.
Indicative rates
These ranges show common retail figures.
| Item | Indicative range |
|---|---|
| Basic single cylinder deadbolt | PKR 1,200 - 3,500 |
| Good brass or steel bolt | PKR 3,500 - 8,000 |
| Smart bolt | PKR 15,000 - 40,000 |
| Reinforced strike plate | PKR 300 - 1,500 |
| Fitting, per door | PKR 800 - 2,500 |
Prices move with brand, model, size and stock. Use these ranges to judge a quote, then compare the exact model and what is included.
Bolt throw and strike strength
A longer bolt throw, at least 25 mm, resists prying, and the strike plate must be steel with long screws into solid framing. A strong lock in a weak frame is the usual failure point.
Door and frame preparation
Solid or reinforced doors take bolts best, and hollow or thin doors need reinforcing around the lock. Check the frame for rot or cracks and fix before fitting.
Smart bolts
Smart bolts motorise the bolt and add codes or apps, but still rely on the same door and frame. Choose models with a key backup and long battery life.
Fitting and exit safety
Drill straight and use the maker's template. Avoid double cylinder locks on exits unless a key is always kept near the door. Make sure everyone can open the door quickly in emergencies. Fitting should be done by a trained locksmith or carpenter, and the door, frame and hinges checked for fit and strength first.
What to check before buying
- Bolt throw. At least 25 mm
- Strike plate. Steel, long screws
- Door. Solid or reinforced
- Exit. Thumbturn inside
Before you decide
Choose single cylinder for homes, reinforce the strike plate and frame and keep exits easy to open. Compare at least two quotes on the same specification, keep the invoice and warranty card, ask for the model name and material in writing and test the product on your own door or in your own room before paying in full. Keep a spare key, card or code record in a safe place, and ask the seller what happens if the item fails within the warranty period. Photographs of the delivered item and its packaging make any claim much simpler later. Prices change with exchange rates and stock, so confirm the current figure before you decide.
Frequently Asked Questions
A lock with a solid bolt that is moved only by key or thumbturn. Ask for the specification in writing so you can compare quotes on the same basis. Check the warranty terms and who honours them before you pay. Measure carefully and confirm sizes with the seller before ordering.
Indicative retail rates run from about PKR 1,200 to 40,000 depending on quality and smart features. Check the warranty terms and who honours them before you pay. Measure carefully and confirm sizes with the seller before ordering. Rates and stock change, so confirm the current position before you commit.
It can trap people in an emergency, so use it carefully. Measure carefully and confirm sizes with the seller before ordering. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise.
Long bolt throw, steel strike plate and a strong frame. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise. Ask for the specification in writing so you can compare quotes on the same basis.
Only with reinforcement. If you are unsure, send a photo and the measurements and we will advise. Ask for the specification in writing so you can compare quotes on the same basis. Check the warranty terms and who honours them before you pay.
Send the quantity, the size or rating and a photo of the space. We reply with a written rate that names the model and the warranty, and lists what is and is not included, so the comparison with other sellers is fair.
Choosing a bolt?
Send the details and a photo. We reply with a written rate.