https://www.mcmaster.com/products/92048A210/
92048A210 | Zinc-Plated Center-Lock Distorted-Thread Locknut
Also known as reversible locknuts, these thread on from either side, so you don't have to worry about fastening them incorrectly and damaging your screw.
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https://www.guitarcenter.com/Lock-It-Straps/Polymer-Plush-2-Locking-Guitar-Strap-Big-Star-Black-White-1500000398686.gc
Lock-It Straps Polymer Plush 2" Locking Guitar Strap Big Star Black/White | Guitar Center
Shop for the Lock-It Straps Polymer Plush 2" Locking Guitar Strap in Big Star Black/White and receive free shipping and guaranteed lowest price.
https://intercom.help/public-b34acd/en/articles/10770562-how-do-i-use-my-alloy-deadbolt-lock
How do I Use my Alloy Deadbolt+ lock? | Public Help Center
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