Nylon Patching for Fasteners
If the metric fasteners we sold at Mr. Metric always made their home in stationary applications or objects, we might never have to worry about them losing their grip over time. Unfortunately the real world doesn’t stand still, and even the highest-quality screws in the world can come loose if the components it joins are subjects to constant vibration. Engines, motors and the parts attached to them vibrate pretty much whenever they’re in use. What’s the solution? Nylon-patched screws.
Nylon patching is a pretty simple concept, really. The screw shaft is treated with a dot of nylon, or a layer that wraps completely around it. When the screw is tightened, the nylon locks the threads tightly into the substrate or receiving threads — hence the use of the term “Lock-Tight” in association with nylon patching. Nylon-patched screws will maintain their grip even under conditions of constant vibration, making them especially popular with the automotive industry (and lately the solar industry as well).
We recently quoted 11 different variations of nylon-patched screws for one of our clients. You can also see from the illustration on our Services page that they come in many different colors. These colors don’t actually represent any kind of coding for particular applications — they’re just an added convenience for clients who might want to organize their screws visually in one way or another. Some people are used to associating blue patching with a brand called Nylock, or red with the name Loctite, but they all function the same regardless of color. Of course, once that vinyl locks tight with its surroundings, you’ll never see it again anyway — and that means it’s working!