An unbolted safe is a strongbox with a handle for carrying it away · review
The only safe on this shelf that publishes the diameter of its locking bolts — eighteen millimeters — and the only one that ships five keys.
The conclusion Eighteen millimeter locking bolts, published — the only bolt diameter on this shelf, and the most useful figure here after the internal dimensions nobody gives. Add a pry-resistant door with hidden hinges, SPCC steel named by grade, a written four-step setup and five override keys, for thirty dollars. No internal dimensions, no thickness behind the word thickened, no grade, and one bullet calls it a fireproof box when nothing else does.
No internal dimensions. No thickness. No grade. Batteries not listed.
The only bolt diameter on this shelf.
Three safes in this group say reinforced, or dual. One gives a number.
Two bolts that diameter are what resist a crowbar in the door gap. The limit after that is the steel they engage — which nothing here publishes.
More than anyone needs.
Most electronic safes ship two. This ships five, with mounting bolts, an anti-scratch carpet and a manual.
Every key is another copy of the thing that defeats the keypad. Keep one somewhere useful, one somewhere else, and dispose of the rest — not in a drawer near the safe.
Whatever the second bullet says.
The setup step reads « Only 4 STEPS to set a password for the Fireproof Box ». Nothing else on the page claims a fire rating.
It is a copy error. If fire is the requirement, the SentrySafe products in this group publish thirty minutes and two hours.
On sale at around $30 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Capacity | 0.23 cubic feet — stated |
|---|---|
| Dimensions | 9.06 in wide, 6.69 in deep, 6.69 in high — stated as the external size. No internal dimensions |
| Body | SPCC steel, stated sturdy and thickened. No thickness figure, despite the word |
| Bolts | Two live locking bolts of 18 mm (0.71 in) diameter — stated. It is the only bolt diameter published anywhere on this shelf, and the figure that actually describes how hard the door is to force |
| Door | A pry-resistant steel door with hidden pry-resistant hinges, stated |
| Lock | A keypad with a covered override key, stated. The listing gives a four-step setup: remove the override key cover, open with the key, fit the batteries, set the password |
| Contents | One safe, five emergency keys, two mounting bolts, an anti-scratch carpet and a manual. Five keys is the most in this group |
| Anchoring | Two mounting bolts supplied — stated, with the safe described as concealable |
| Grade | Not published |
| Stated for | Office, hotel and business use: jewelry, cash and firearms |
| Amazon reference | B0D1X55SW4 |
| EAN | 0759224174409 |
Because it is the only number on this shelf that describes how hard the door is to open by force. Three safes in this group say reinforced or dual locking bolts; one says 18 mm (0.71 in). A bolt that diameter, in two places, is what resists a crowbar in the door gap — and the practical limit then becomes the steel the bolt engages, which no safe here publishes. This shelf's introduction lists body and door thickness among the things this shelf compares; nothing gives it, and this listing at least gives the next most useful figure.
It is unusual and probably generous rather than meaningful. Most electronic safes ship two override keys; this one ships five, along with two mounting bolts, an anti-scratch carpet and a manual. More keys means more copies of the thing that defeats the keypad, so the sensible response is to keep one somewhere useful, one somewhere else, and get rid of the rest rather than leaving them in a drawer near the safe. The listing itself does not address where they should live.
No, and the second bullet calls it one by accident. The setup instructions read Only 4 STEPS to set a password for the Fireproof Box, while nothing else on the page claims any fire rating and the product is described throughout as a steel security safe. It is a copy error rather than a claim — this is a 0.23 cubic foot steel box with two bolts and a keypad. If fire protection is the requirement, the SentrySafe products in this group publish actual ratings, at thirty minutes and two hours.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Capacity | Dimensions | Body | Lock |
|---|---|---|---|---|---|
| CDC DIGI 1710-1 digital electronic money safe, 0.23 cu ft | $30 | 0.23 cubic feet — stated | 9.06 in wide, 6.69 in deep, 6.69 in high — stated as the external size. No internal dimensions | SPCC steel, stated sturdy and thickened. No thickness figure, despite the word | A keypad with a covered override key, stated. The listing gives a four-step setup: remove the override key cover, open with the key, fit the batteries, set the password |
| MAESTON 17E electronic coin bank safe for children | $30 | Not published | Not published, external or internal | Not described — no material and no thickness | An electronic password keypad — stated |
| Yuanshikj YSKJ-SAFE-17K-SFB small steel safe, 0.23 cu ft | $30 | Published twice and the two do not agree: 0.23 cubic feet in the title and 0.2 cubic feet in the second bullet. A 13 per cent difference on the figure the shelf is organized by | External 9.05 × 6.69 × 6.69 in, internal 6.29 × 8.9 × 5.12 in — both stated. It is one of three safes in this group to publish an internal size, which is what this shelf's buying tip asks for | Reinforced solid steel wall construction with a corrosion and stain-resistant powder coat, stated. No thickness | A digital keypad, programmable, with two emergency keys supplied. A magnetic lock is stated to re-lock automatically |
| Honeywell 6104 small fire-resistant lock box, 0.17 cu ft | $31 | 0.17 cubic feet — stated. The smallest in this group | Not published, external or internal | Double steel wall construction with fire-resistant insulation between, stated. It is the only small safe in this group built that way; the rest are single-skin steel | A dual locking system with a secure key lock, with two entry keys supplied |
Details checked on October 8, 2026.
A household that wants a bolt figure rather than the word reinforced
Amazon reports what buyers took in the month before this page was last checked: at least 1,000.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Book-shaped diversion safe · 3-digit combination · fabric cover and spine · for a bookshelf
A diversion safe shaped like a book, with a fabric cover and spine and a three-digit combination lock. Amazon Basics states it is meant to sit between other books on a shelf.
Best for: Concealing something small in plain sight, in a house where nobody is looking hard.
14 L · digital keypad · 2 override keys · concealed anti-pry hinges · adjustable shelf · 4 × AA
A 14-liter steel safe with a digital keypad, two emergency override keys kept separately, concealed hinges described as anti-pry, and a removable adjustable shelf. It runs on four AA cells.
Best for: The default household safe: big enough for documents, small enough to bolt into a wardrobe floor.
≈ $58
200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in) · self-programmable electronic lock · single-wall body · basic valuables protection
BURG-WÄCHTER describes the Favor S3 E as basic valuables protection: a single-wall body with a self-programmable electronic lock, in a furniture safe of 200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in).
Best for: A household that wants a safe from a safe manufacturer rather than from a general brand.
≈ $140
