Cylinders
One good cylinder, or two that share a key and name a standard?
These solve different problems. ABUS sells a cylinder; BASI sells two that open with the same key and states the European standard they were tested against, EN 1303:2015 — the clearest such statement in this hub: GERCAR claims EN 1303 only "on the essential points", and the D6XNP listing publishes no grade. Both are European profile cylinders: they fit European mortise locks, not American deadbolts or knob sets.
| Compared on | D6XNP 40/50 | V55 (keyed-alike pair) |
|---|---|---|
| Sizes | 40/50 mm (1.57/1.97 in) | Two × 30/30 mm (1.18/1.18 in) |
| Keys supplied | 5 keys | 10 keys |
| Keyed alike | Single cylinder | Both cylinders, one key |
| Standard named | No EN 1303 grade published | EN 1303:2015, per BASI, no grade code |
| Anti-pick pins | Stated | Not stated |
| Emergency function | Yes | Yes |
| Orientation | Usable either way round | Symmetrical, 30/30 |
| Code card | Yes | Yes |
| Snap resistance | Not described | Not stated |
| Listed on amazon.com | Yes | No |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
Buy the D6XNP when one door needs a specific size and the anti-pick pin set is what you are paying for. Measure both halves from the center screw before ordering.
No amazon.com listing was found for this one. We hold references for other markets but none for the United States, so it may not be buyable here — which is the first thing to weigh against anything below.
Buy the BASI pair when a front and a back door should share a key, and when a named standard is worth more to you than a manufacturer's own scale.
That the cylinder was graded under the European cylinder standard, but not how well. The grade is written as an eight-digit code whose last two digits give key security and attack resistance. Without that code, "tested" says where the test came from, not what it found: ask the seller for the full code.
From the center of the fixing screw hole to each face separately — 30/30, 40/50, never simply "80 mm". Fit it so the shorter half is outside and nothing stands proud of the handle plate: what sticks out is what gets gripped.
Only with the hardware around it. A cylinder that stands out more than a few millimeters can be gripped and snapped; a protective escutcheon that covers it prevents that. Neither ABUS nor BASI describes snap or pull protection for these models.
40/50 mm (1.97 in) · usable in either orientation · anti-pick pins · emergency function · 5 keys
The same D6XNP cylinder in 40/50, for a thicker door or a door with a heavier handle set. ABUS states it can be fitted in either orientation, with the same emergency function, pins and code card.
Best for: A thicker door, or one where the 30/30 measured short.
≈ $72
Two 30/30 cylinders keyed alike · 10 keys · emergency function · tested to EN 1303:2015
Two cylinders that take the same key, with ten keys between them. BASI states the V55 range is tested to EN 1303:2015 and supplied direct from the manufacturer, with an emergency function on both.
Best for: A front and back door, or a house and a garage, that should share one key.
