System Carat S4 – Patented Protection Until 2036
The Wilka Carat S4 locking system offers the ideal solution for keyed alike locking and small master key systems in private single or multi-family homes. Line pro stands out with its unique wave contour, giving the key a distinctive design. The solid nickel silver key with rounded contours provides maximum locking comfort.
Product Description:
- WILKA Carat S4 – Half Cylinder
- Includes 3 keys
- Patent protection until 2036
- Registered individual locking with security card (keyed alike combinable)
- Comfortable key guidance
- Special spool pins for picking resistance
- 1 housing pin made of hardened steel for drill protection
- Paracentric key profile to prevent unauthorized opening with lockpicking tools
- Up to 8 additional lateral profile control balls

Technical Data:
- Cylinder according to DIN 18 252 / DIN EN 1303
- 6 pin tumblers (from 30 mm)
- 5 pin tumblers for short cylinders (26.5 mm) or asymmetric cylinders
- Matte nickel-plated brass
- Cylinder fixing screw M5
All our lock cylinders are delivered with a security card. This card entitles you to have duplicate keys made. You can have duplicate keys made by us or at any authorized specialist shop. Please note that duplicate keys – depending on the manufacturer – can cost significantly more than the original order.
Please note that the lock cylinders may be up to one millimeter longer. This is especially important for doors without fittings (doors that are flush on the outside) or for door fittings with a fixed drill protection. In these cases, lock cylinders with a length of 27 or 28 millimeters on the outside are preferred.
Our lock cylinders are exclusively brand-new products that can be ordered in any quantity. You can also order additional lock cylinders later that match your original order. For example, you can order a single-locking lock cylinder and later combine it with another cylinder from the same series, so that you can lock and unlock both with just one key set (keyed alike). You can expand this setup with double cylinders, half cylinders, or knob cylinders from the same series as desired. Therefore, when ordering, make sure that the cylinders are not clearance items or liquidation stock.
You can also reorder the lock cylinders you’ve purchased from us at any time.
Your onlineshop team
Product safety information – Click here for more info
WILKA Schliesstechnik GmbH · Mettmanner Str. 58 – 64 · 42549 Velbert · Germany · info@wilka.de
This Product was added to our catalogue on 20/05/2025.