S-Locks Classic (without screw)

S-Locks Classic (without screw)

From €26.20*

Prices incl. VAT plus shipping costs

available, delivery time appr. 1-3 days Germany, 3-5 days Europe, 5-7 days other countries

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Schaller S-Locks Classic set (without screws)


With Schaller Security Locks, we developed and patented a completely new product in 1981, probably the most secure connection between guitar and strap.
In contrast to our regular S-Lock range, where the strap pin and fastening screw are made of steel in one piece, the S-Lock Classic is the perforated strap pin sleeve, which is fastened via a separate fastening wood screw (not included in scope of delivery).
Both versions offer Schaller's proven quality for securely fastening the strap to instruments such as guitars or basses.

Note: Please read our S-Locks user guide before !installation.    

S-Locks: 3 x S for

  • Safe
  • Silent &
  • Schaller strap locks

Concept and features

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In the development of the new revolutionary S-Locks we have combined 3 parts to perfection:

  • unique hardened steel strap buttons
  • S-Locks suitable for different belt thickness with ergonomic operation
  • and a patented locking nut - Lock-Wheel - with triple security architecture.

Schaller S-Lock Classic set consisting of:  

2 x S-Lock Classic strap buttons (without fastening screws)


  • made of the hardest steel for maximum wear resistance and safety
  • including high-quality felt washers to protect the instrument
  • Dimensions strap buttos same as original security locks: Height: 10mm; Diameter outside: 12mm; 
    Diameter max. for screw head: 6.8mm; Diameter hole for screw: 3.8mm

These are easy to install using a suitable wood screw (not included in scope of delivery).
Detailed assembly instructions can be found in this product description below.

2 x Locks for S-Locks



  • 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

2 x S-Lock-Wheels


  • 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.

Compatibility Schaller Security Locks and S-Locks

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

  • strap button old SecLock/S-Lock Classic + 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 Locks for S-Locks with Lock-Wheels for S-Locks 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.

Schaller S-Locks: only original in the pictured crystal box


It can also be used as a sustainable storage container after removal of the protective foam.

PDF-file download (technical drawing without engagement)

  • PDF follows