MVP 100 Red 18-22 AWG Vinyl Insulated Ring Terminals 5/16" Stud - Made in USA
100 Pack The picture is only representative and may not be the exact stud size in this listing. It is the same gauge and type and is from our manufacturer. Our supplier was carefully chosen based on the following performance criteria: US manufacturing base of operations Vertical integration for lower cost UL certification capabilities Let’s take these one at a time: USA manufacturing. We believe it’s important to support US manufacturing, and our supplier passes that test with flying colors. Not only is production based in the USA, but feed stock raw materials such as Nylon, PVC’s, and ETP copper strip are also of domestic origin…this is equally important in our view! Vertical integration means everything is basically done in-house, top to bottom. Starting with the bulk nylon and PVC (polyvinylchloride) pellets, these are blended for proper coloring and then injection molded or extruded into the final insulator. The copper used comes in giant coils and is processed through progressive die stamping equipment to produce the raw terminals. They even make all their production tooling in house too. Getting into the weeds: ETP! What’s that? ETP stands for “Electrolytic Tough Pitch”. Huh?? Short Answer: ETP is the highest grade of electrical conductivity copper available. In terms of conductivity the next level up is silver, which is obviously unreasonable for everyday wire terminal applications. So back in the day the term “tough pitch” originated from the time when molten copper, after refining, was cast into ingot molds. During refining the copper was oxidized to remove impurities, and then reduced by hydrogen to give the correct oxygen level. To monitor this process a small samples was taken and the solidification surface observed. If the surface sunk there was too much oxygen. If it was raised there was too much hydrogen. If it was level (correct pitch), the oxygen level was correct and the properties were good; in other words “tough”, and hence the term “tough pitch”. Annealing is the process of controlled heating of the raw terminal. This is required after cold forming to relieve the stresses that are created in the material during cold forming. This restores flexibility to the cold worked terminal. Some manufacturers will skip this step to save money. Cheap terminals will be brittle; you can demonstrate this by grabbing the terminal pad and bending it back and forth. If it breaks or cracks, or is difficult to bend, you’ve got a cheap terminal. Vibration can do this to terminals in the same manner as your bending it. You get what you pay for! Insulation: We only use extruded insulation for our butt connectors (as do all other manufacturers). Molded nylon or vinyl insulation is superior to extrusions and much less likely to split while crimping. All of our terminals with insulation have a flared or funneled entry, which allows for easier wire insertion with no hang-ups. For our heat shrink terminals we top quality genuine 3M heat shrink tubing. Nylon insulation is more pliable (and thus easier to crimp) and has better heat resistance than vinyl. Heat shrink tubing provides the best protection against moisture intrusion. Vinyl (PVC) is the most economical and is suitable for general purpose applications. Powered by SixBit's eCommerce Solution