Contact screw Golden Spike

It has a standard precision thread and is compatible with most conventional coil machines, including many custom machines that meet industry standards. Before ordering, check the thread of the current contact screw on your machine. Caution: the part only makes sense for coil machines — rotary and pen-type machines do not use a contact screw. The catalog dimensions are: length 37 mm, thickness 0.35 mm, weight 4 g.

The spike geometry is the same — sharp tip, point contact, fast response. The difference is the coating: gold offers maximum electrical conductivity and does not oxidize at all, so the contact remains clean throughout the life of the part, but it is a softer metal, so the tip flattens somewhat faster. Nickel/chrome is more mechanically durable, but conducts slightly weaker. In short: gold = maximum electrical performance, silver = maximum durability.

Being a spike tip, the contact pressure is concentrated on a very small surface, so the gold plating wears faster than on a rounded tip — in intensive professional use, the estimate from the product specifications is 3-6 months. Signs of replacement are visible flattening of the tip and disappearance of the gold layer on the contact point. Check monthly and always keep a spare part.

After each session, wipe the contact tip with isopropyl alcohol and a soft swab — never abrasives, because they remove the gold coating. You can lightly lubricate the thread with fine machine oil to keep the adjustment smooth. Gold does not oxidize in contact with air, moisture, or common disinfectants, so it does not require special treatments — just regular cleaning and periodic checking of the tip and spring condition.

It is designed for a liner. The conical tip creates a minimal contact point with the spring, and the sudden break of contact accelerates the electromagnetic cycle — exactly what you want in a fast and precise liner machine. For delicate shading, many tattoo artists prefer a rounded tip screw, which gives a softer cycle. The most practical is to have both types and swap them depending on the configuration — the swap takes under a minute.

If you are just starting and working on a rotary machine, no — the part is not compatible with rotaries. But if you are learning on coil machines and want to understand tuning, it is an inexpensive wear part with which you can experiment with the difference that electrical contact makes in machine behavior. For professionals who work intensively with coils, the clean gold contact eliminates electrical variables and allows for more precise and repeatable adjustment from session to session.