Best Door Bolts for Security and Privacy: 2025 Expert Review
DR Joinery
Expert Joiner & Proprietor
A simple door bolt is often the most overlooked piece of ironmongery in a home, yet it provides essential privacy and security. Whether it is keeping a bathroom door shut in a busy family home or securing a garden shed against the elements, the humble bolt needs to be reliable. Cheap versions rattle, rust, or simply don't line up after a few months of use.
Working across York's historic housing stock, I frequently encounter doors that have dropped or frames that aren't square. In these scenarios, fitting a bolt isn't just about screwing it on; it requires understanding the timber movement and choosing the right material—be it brass, chrome, or stainless steel—to suit the environment.
In this review, I've selected three bolt options that I've analysed for durability and practicality. I've included a budget stainless steel option for general use, a specific repair solution for outdoor storage (common in many gardens), and a multi-pack solution for securing double doors.
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Specs vs. The Real World
The Spec: "Included Screws"
"Manufacturers claim the included hardware is sufficient for installation."
In my experience, the screws supplied with packet bolts are often soft and snap easily, especially into hardwoods like Oak. I always recommend discarding them and using high-quality stainless steel or brass wood screws.
The Spec: "Rust Resistant 304 Steel"
"304 Grade Stainless Steel prevents rust indefinitely."
Whilst 304 is good for internal use and mild external conditions, in a damp Yorkshire winter, even 304 can show 'tea-staining' (surface rust spots). For coastal or very exposed locations, 316 Marine Grade is the only true rust-proof solution.
My Top 3 Recommendations
Three options to cover different needs and budgets
JelKen Door Lock Bolts 3" (75mm), 304 Stainless Steel
JelKen
This is a straightforward, no-nonsense barrel bolt. Priced affordably, it uses 304 stainless steel which is a step up from the cheap zinc-plated alternatives often found in discount bins. Ideally suited for bathroom doors or internal cupboards.
The Good
- Very affordable price point
- 304 stainless steel offers decent corrosion resistance for internal damp areas (bathrooms)
- Simple slide mechanism is less likely to seize than complex locks
The Bad
- Screws provided are likely too short for heavy security use
- Industrial appearance might not suit period properties or heritage joinery
Installer Tip:
When fitting this to a bathroom door, ensure you pilot drill the holes first. If the door is hollow core (common in modern builds), make sure at least two screws hit the solid timber block usually located near the handle height.
Priced at £3.29 at the time of writing
Check Price on AmazonReplacement WLHD Sliding Bolt Lock Latch for Keter Store It Out
DIY Best Buy
This isn't a standard joinery bolt, but it's a vital repair part for Keter outdoor storage units. I'm including it as the 'Quality' option because it solves a specific, expensive problem (broken specific latches) with a UK-manufactured, UV-resistant part that saves you replacing the whole unit.
The Good
- Saves replacing expensive garden storage units
- UV resistant material prevents the brittleness that breaks the originals
- Manufactured in the UK
The Bad
- 3D printed finish has a texture unlike injection moulded plastic
- Only suitable for specific Keter models, not general joinery
Installer Tip:
When screwing into plastic garden storage, do not overtighten. Hand-tighten the screws just enough to hold firm. Using a power drill often strips the plastic thread, rendering the fixing point useless.
Priced at £10.95 at the time of writing
Check Price on Amazon2 Sets Door Lock Bolt, 3 Inch Stainless Steel Slide Latch
Udewo
This two-pack is my 'problem-solving' choice because it's ideal for French doors or stable doors where you need one bolt at the top and one at the bottom. Getting two matching bolts in one go ensures a uniform look and balances the door leaf correctly.
The Good
- Excellent value - two bolts for under £5
- Perfect for securing the 'slave' door on double door sets
- Simple barrel design is robust enough for garden gates
The Bad
- Finish is functional rather than decorative
- Included screws are basic quality
Installer Tip:
On double doors (French doors), fit these to the edge of the slave door (the one that stays shut most often) at the top and bottom. Recess properly into the timber if space is tight, or surface mount if there's a sufficient gap. This prevents the doors from bowing in winter.
Priced at £4.99 at the time of writing
Check Price on AmazonFrequently Asked Questions
Should I use a bolt or a sash lock?
How do I fit a bolt if the door frame isn't flush?
Are stainless steel bolts suitable for coastal areas?
Can I fit these bolts to a uPVC door?
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