Complete guide: Set of screws Cheyenne ISO 4027 M3X3 A2 Pen Unio
The Cheyenne ISO 4027 M3X3 A2 screw set is an original spare part for the Cheyenne Pen Unio tattoo machine, used to secure the grip or the working module. It is useful for artists who perform routine maintenance at home in the studio, without having to send the machine to service every time a screw wears out, bends, or gets lost. Being made from A2 quality stainless steel, it withstands frequent contact with water, cleaning solutions, and disinfectants — a basic requirement for any component that is part of the working equipment of a tattoo studio.
How to use
- Turn off and disconnect the Pen Unio machine from the power source before any intervention.
- Identify the worn, bent, or damaged thread screw that needs replacement (usually the one securing the grip or working module).
- Loosen the old screw with a hex key (Allen) that fits the ISO 4027 screw head, without forcing the socket.
- Remove the old screw and visually inspect the thread in the machine body — if it appears damaged, do not force the installation of a new screw.
- Position the new M3X3 screw from the set into the threaded socket and screw it in manually for a few rotations to avoid cross-threading.
- Tighten firmly with the hex key, enough to eliminate play, without excessive force that could deform the thread.
- Check that the grip or working module is stable, without play or vibrations when moved manually.
- Briefly test the machine to confirm it runs smoothly, without unwanted vibrations from the fixation.
Tips from us
- Keep a spare set in your studio's maintenance kit for quick replacements between sessions.
- Use a quality Allen key that fits the hex head well to avoid rounding the screw socket.
- Check the condition of the screws during every deep cleaning of the machine, not just when a visible problem appears.
- Use exclusively M3X3 ISO 4027 screws for this Pen Unio model — do not mix with screws of other sizes or standards.
- Store unused screws in their original packaging, away from moisture, to prevent loss or premature corrosion.
- If a screw does not thread easily from the start, stop and check the alignment — do not force it.
Warning: As these are components of the machine's mechanism that indirectly reach the working area, follow your studio's hygiene procedures: clean and disinfect the parts according to the studio's protocol before each installation. A2 stainless steel generally withstands autoclave sterilization, but repeated cycles can accelerate wear over time — periodically inspect the screws for signs of corrosion or thread damage and replace them preventively if needed. Never force a screw that does not thread easily: you risk damaging the thread in the machine body, a repair much more costly than a set of screws.
Frequently asked questions
Are these screws compatible with other Cheyenne machines, not just the Pen Unio?▾
They are not guaranteed to be compatible with other Cheyenne models. They are specifically designed for the Pen Unio, with M3X3 size and ISO 4027 standard corresponding to the mechanism of this model. Other Cheyenne machines may use screws with different specifications, so check your machine's manual before ordering.
Why should I choose original Cheyenne screws over generic ones?▾
Original screws meet the dimensional tolerances of the Pen Unio mechanism, ensuring a firm fit without play or parasitic vibrations. Generic screws, with different tolerances or inferior material, can damage the thread more easily or corrode faster when in contact with disinfectants.
What material are they made of and are they resistant to disinfectants?▾
They are made from A2 quality stainless steel, a material with good corrosion resistance, suitable for components that frequently come into contact with water and cleaning or disinfecting solutions — exactly the working environment in a tattoo studio.
Can I sterilize these screws in an autoclave?▾
A2 stainless steel generally withstands autoclave sterilization processes. However, repeated sterilizations can accelerate wear over time, so it is advisable to periodically inspect the screws for signs of corrosion or thread damage and replace them preventively if you notice issues.
What tools do I need to install the screws?▾
You need a hex key (Allen) of the appropriate size for the ISO 4027 screw head. Choose a quality key that fits well in the socket to avoid rounding the hex head when tightening.
How many screws are in the set?▾
The exact number of pieces in the package is not specified in the product sheet. For precise details about the quantity, check the full product description or contact the tatuat.ro team before ordering.
Product description
Cheyenne Screw Set ISO 4027 M3X3 A2Compatible with Pen Unio
The Cheyenne ISO 4027 M3X3 A2 screw set for Pen Unio is an original maintenance and replacement accessory specifically designed for the Cheyenne Pen Unio tattoo machine. The screws comply with the international ISO 4027 standard, guaranteeing dimensional precision and perfect compatibility with machine components. Manufactured from A2-grade stainless steel, these screws offer superior corrosion resistance, essential in a working environment where contact with cleaning liquids and disinfectants is constant. The M3X3 dimension indicates a 3mm metric thread with 3mm length, the exact specification required for the grip attachment mechanism or working module of the Pen Unio. Using original Cheyenne screws is crucial for maintaining optimal machine performance, preventing unwanted vibrations, excessive grip play, and premature component wear. Non-original screws or those with incorrect dimensions can cause thread damage, malfunction, and even irreversible equipment damage. The set includes the necessary number of screws for complete replacement, allowing the artist to perform routine maintenance without sending the machine for service. It is an essential spare part in any Cheyenne Pen Unio owner's maintenance kit. The secure packaging protects screws during transport and storage, preventing loss or damage. The premium quality of materials used ensures long-term performance and resistance under intensive use conditions. Each screw is manufactured with strict tolerances to ensure perfect compatibility with the Cheyenne mechanism. Investing in original spare parts protects the value and performance of professional equipment.
Frequently Asked Questions Which Cheyenne machine are these screws compatible with? These screws are specifically designed for the Cheyenne Pen Unio tattoo machine. The M3X3 dimension and ISO 4027 standard are the exact specifications used in this model's attachment mechanism. They are not guaranteed compatible with other Cheyenne models like Sol Nova or Hawk, which may use screws with different specifications. Why is it important to use original Cheyenne screws? Using original Cheyenne screws is essential for maintaining machine performance and longevity. Non-original screws may have different dimensional tolerances, which can cause excessive play, unwanted vibrations, or thread damage. Also, inferior materials may corrode faster in contact with disinfectants, compromising equipment safety and functionality. How often should the screws be replaced? Replacement frequency depends on usage intensity and maintenance procedures. As a general rule, check screw condition during each deep machine cleaning. Replace them immediately if you notice signs of wear, damaged thread, or tightening difficulties. A spare set should always be available in the studio's maintenance kit. What does the ISO 4027 specification mean? ISO 4027 is an international standard defining screws with internal hexagonal socket (Allen) and flat point. This specification guarantees precise dimensions, strict tolerances, and universal compatibility among screws meeting this standard. ISO 4027 screws are designed for firm fastening without protruding above the surface, ideal for precision equipment. What does A2-grade stainless steel mean? A2 grade refers to an austenitic stainless steel type (equivalent to AISI 304), known for excellent corrosion resistance in ordinary environments. This material withstands contact with water, cleaning solutions, and disinfectants without rusting or deteriorating. It is the standard choice for screws used in medical and cosmetic equipment. Do I need special tools to change the screws? Yes, for ISO 4027 Allen-type screws you need a hexagonal wrench (Allen key) of the corresponding size. The wrench should be of quality to avoid damaging the hexagonal head of the screw. Most Cheyenne maintenance kits include the necessary wrench. Never use improvised tools that can damage the screw or machine. Can the screws be sterilized in an autoclave? Yes, A2 stainless steel screws can withstand sterilization processes in autoclaves at standard industry temperatures. However, repeated autoclaving cycles over time can accelerate wear. If you frequently sterilize machine components, periodically inspect screws for signs of corrosion or deterioration and replace them preventively. What happens if I use the wrong size screws? Using wrong-size screws can cause serious problems: damaged threads, insufficient fastening generating vibrations, or excessive pressure on components that can lead to cracking. In the worst case, an inappropriate screw can cause machine failure during a tattoo session, endangering the safety of both the client and artist. Does the set include installation instructions? The set contains the necessary replacement screws. For detailed installation and maintenance instructions, consult the original Cheyenne Pen Unio machine manual. The replacement process is relatively simple for an experienced artist, but if you're unsure, contact an authorized Cheyenne service center for professional assistance. Can I order screws individually or only as a set? The Cheyenne ISO 4027 M3X3 A2 screws are available as a set, providing the complete number of screws needed for Pen Unio maintenance. Purchasing as a set ensures you have all necessary screws and potential spare pieces. It is recommended to always have a complete set in stock for emergency situations or routine maintenance.
