SHOMEA Stainless Steel Precision Multi-Step Internally Threaded Sleeve

• One-Piece Swiss-Type CNC Machining Ensuring Superior Coaxiality for Multi-Step Structure

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• Premium Stainless Steel Material Balancing Corrosion Resistance and Mechanical Strength

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• Precision Internal Threading for High-Fit Accuracy and Repeatable Positioning

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• Multi-Step Outer Diameter Design for Versatile Axial Limiting and Supporting Needs

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• High Surface Finish Reducing Friction and Wear

FAQs:

Q: What internal thread specifications (metric/inch) are available? What is the thread accuracy grade?

A:​ Standard metric M4-M20, inch #8-32 to 3/4"-16, and pipe threads are available, with internal thread accuracy up to 6H. Non-standard or fine-pitch threads can also be customized upon request.

Q: What surface treatments are available? Are there additional charges?

A:​ Standard finish: natural passivation. Optional: mirror polishing​ (Ra≤0.2μm), electropolishing, nickel plating, or black oxide. Mirror polishing and special electroplating may incur extra charges; standard passivation is free.

Q: What machining process is used? How is the coaxiality of multi-steps ensured?

A:​ Machined on Swiss-type CNC​ in a single clamping, internal thread and outer diameter are processed simultaneously, avoiding cumulative errors from multiple clampings. Ensures coaxiality ≤0.015mm​ and radial runout ≤0.01mm.

Q: Are there surface defects (tool marks, burrs)? How is cleanliness ensured?

A:​ All parts undergo automatic deburring​ and magnetic polishing. Outer diameter and thread surfaces are free of visible tool marks and burrs, with sharp edges deburred to C0.2 or R0.1​ (customizable). Medical-grade parts can include ultrasonic cleaning​ service.

Q: What payment methods are supported? Do you offer samples? How are sample costs calculated?

A:​ Payment methods: T/T, Alipay, WeChat Pay, and L/C. Free samples available for standard parts​ (freight collect). Custom samples​ require mold/processing fees (deductible from bulk order payment, depending on complexity).