This is the mounting system that we use with Tek-Lok and many other knife sheath and gun holster belt loops and fasteners. These sizes are common for many belt loop and belt clip attachment assemblies.
This mounting assembly comes with:
(1) Threaded Post - Black Coated (.250 Inch)
(1) Phillips Head Screw - Black Coated (.4375 Inch)
(1) Washer (.125 Inch)