Schaller Lock for S-Locks

The S-Locks Lock

By pulling the ball with locking pin away from the lock, you release the safety catch of the Schaller S-Locks attached to the belt as shown in the illustration. The belt lock is released and can be pulled off the side of the button (pin) attached to the instrument.

Please read the following user guide before selecting S-Locks in our shop or installing them:

Concept and features

Scope of supply

• 2 x S-Locks Locks
• 2 x S-Locks Lock-Wheels

The S-Locks improved new lock


• extended thread length for holding straps of up to 6 mm thickness,
• newly designed slanted locking bolt made of stainless steel for minimum wear and thus maximum safety
• new design pull-up ball for best haptics
• suitable for a standard hole in the belt of 10 mm
• Receptacle for Schaller strap buttons 12mm



The new Lock-Wheel: featuring 3-stage safety concept

• Lock-Wheel with special patent thread ensures a secure hold. It can be tightened safely by hand without tools.
• The 2-hole mount (suitable for 2 mm Allen key or screwdriver) allows a firmer tightening torque of the Lock-Wheel with maximum hold.
• Undetachable hold due to grub screw with tapered cap and slot 2.5 x 5 mm made of stainless steel. Simply unscrew the set screw again to unscrew the Lock-Wheel; the thread remains functional and cuts itself "free" again through the Lock-Wheel.

Choose from more matching strap buttons in different lengths here:


• Strap Buttons size S: male thread 3.5 mm, inside 2.4 mm, length 18 mm
• Strap Buttons size M: male 4.0 mm, inside 3.0 mm, length 22 mm - most commonly used
• Strap Button size L: male 4.5 mm, inside 3.2 mm, length 27 mm
Compatibility between Schaller old Security Locks and current S-Locks

a.) S-Locks are compatible with all existing Schaller Security Locks like this:

• strap button old SecLock + lock new S-Lock (without silent feature!)
• strap button new S-Lock + lock old SecLock only limited, we do not recommend it.

Please always use our new S-Lock lock with Lock-Wheel on your strap, then you will always be compatible with all strap buttons and at the same time you will always use all the advantages of our new Lock-Wheel.

Please always make sure that the lock is engaged in the strap button, the lock is attached to the belt in such a way that the strap button is secured in the U-shape of the lock and that the instrument does not rotate.

b.) One strap for several instruments