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SUS304 Stainless Steel Black Oxide CNC Precision Machined Step Sleeve Stepped Bushing for Automation Jigs
| Place of Origin | Dongguan Guangdong |
| Brand Name | SITUO |
| Certification | ISO9001 & TS16949 |
| Model Number | ST-0000101 |
SUS304 Stainless Steel Step Sleeve
,Black Oxide Stepped Bushing
,CNC Precision Machined Shoulder Sleeve
This SUS304 stainless steel step sleeve is precision manufactured using CNC turning and finished with a black oxide treatment. It features a multi-stage stepped structure and can be engraved with a logo or marking on the surface. The component offers high dimensional accuracy, wear resistance, and anti-rust performance, making it widely used as a positioning and connecting component for automation jigs, testing fixtures, and mechanical equipment. We support non-standard custom machining based on customer drawings or samples.
- Material: SUS304 stainless steel with stable material properties and good corrosion resistance.
- Surface Treatment: Black oxide finish improves wear resistance and provides an anti-glare effect.
- Structure: Step design for convenient limit positioning and assembly.
- Custom Marking: Supports laser or knurling engraving of patterns, logos, and characters.
- Machining: CNC precision turning with stable tolerance and neat appearance.
- Custom Service: Adjustable size, tolerance, structure, and surface treatment according to requirements.
- Application: Suitable for repeated positioning, guiding, and connecting in mechanical assembly.
| Material | SUS304 Stainless Steel |
|---|---|
| Machining Method | CNC Turning |
| Surface Finish | Black Oxide |
| Structure | Multi-step Sleeve |
| Optional Service | Custom Engraving / Marking |
| Tolerance | Customizable, normally ±0.005~±0.03mm |
| Custom Way | Custom by drawing / sample |
| MOQ | Small batch trial order acceptable |
This black oxide stainless steel step sleeve is widely applied in automation jigs, inspection fixtures, transmission assemblies, packaging machinery, industrial equipment, and other precision mechanical fields. It is used for limit positioning, guiding, shaft matching, and connection fixation.
A1: Yes, we support custom marking, pattern, and logo engraving on the surface.
A2: We can reach precision tolerance up to ±0.005mm as per your drawing requirement.
A3: Sure, polishing, passivation, and other surface treatments are available upon request.
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.
Our maximum processing outer diameter is 60mm, and the minimum control tolerance is 0.001mm. We operate Japanese CNC Tsugami and CNC Citizen machines, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment, which can effectively provide customers with the best technical solutions.
Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment.
Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.
Our customers include Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, and Siegenia.
| Main Product Names | Stainless steel screws, carbon steel screws, pins, rivets, nuts, eccentric nails, embedded parts, and other fasteners. |
|---|---|
| Business Type | Factory / Manufacture |
| Service | CNC Machining, Turning and Milling, CNC Turning, Cold Heading, Stamping, Assembly Service |
| Material |
1). Aluminum: AL 6061-T6, 6063, 7075-T etc. 2). Stainless steel: 303, 304, 304L, 316L, 316F, 630, 410, 420, 430, etc. 3). Steel: 4140, Q235, Q345B, 20#, 45#, 1215, 12L14, 1144, 1006, 1008, 1010, 1015, 1018, 10B21, 1035, 1065, etc. 4). Alloy steel: 5140, 4135, 4140, 3435, 5120, 415, 435, 440, etc. 5). Titanium: TA1, TA2/GR2, TA4/GR5, TC4, TC18, etc. 6). Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000 (H90), C27000, C51900, C11000, C3604, H62, H65, etc. 7). Copper, bronze, magnesium alloy, Delrin, POM, Acrylic, PC, etc. |
| Finish | Sandblasting, Anodize color, Blackening, Zinc/Nickel Plating, Polish, Powder coating, Passivation PVD, Titanium Plating, Electrogalvanizing, electroplating chromium, electrophoresis, QPQ (Quench-Polish-Quench), Electro Polishing, Chrome Plating, Knurl, Laser etch Logo, etc. |
| Drawing Format | STEP, STP, GIS, CAD, PDF, DWG, DXF, etc., or samples. |
| Tolerance | ±0.01mm ~ ±0.05mm |
| Surface Roughness | Ra 0.1~3.2 |
| Inspection | Complete inspection lab with Micrometer, Optical Comparator, Caliper Vernier, CMM, Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge |
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