Set of screws Cheyenne ISO 4027 M3X3 A2 Pen Unio
- Stock: In Stock
- Estimated delivery time: Tuesday, 26.05.2026
- Product code: 4722277
- Working hours: Mon-Fri: 10:00 - 21:00 (Romania time)
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Delivery in Romania is done by:
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The delivery time is 1-2 business days, but may be extended in exceptional cases (weather conditions, high volume of orders).
Orders placed outside of business hours (Mon-Fri 10:00 - 20:30) will be processed the next business day.
Tatuat.ro products benefit from the legal guarantee of conformity, according to the legislation in force. If non-conformities occur, the product will be repaired or replaced free of charge. In case of impossibility of repair, you can receive a price reduction. Damaged or missing products must be reported within 24 hours of receipt. For more details, consult the warranty certificate.
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You can return the products within 14 days of receiving them, according to OUG 34/2014. Complete the return form on the site to initiate the process. Products must be in their original packaging, intact and accompanied by all accessories.
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Return costs are covered by the customer, except in cases where the product is defective or incorrectly delivered. The refund of the amount paid will be made within 14 days of receiving the return.
THIS PRODUCT IS EXEMPT FROM RETURNS, according to OUG 34/2014 on consumer rights, Art. 16. Sealed products, unsealed for health protection or hygiene reasons, cannot be returned.
Description
ISO 4027 M3X3 A2
Compatible 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.
