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Semi-Hollow Structure Stepped Pin Shaft and Shoulder Connecting Fixing Shaft with Stepped Shoulder Design for Non-standard Custom CNC Machining
| Place of Origin | GuangDong Dongguan |
| Brand Name | SITUO |
| Certification | ISO9001 & TS16949 |
| Model Number | ST2026-200048 |
Semi-Hollow Structure Stepped Pin Shaft
,Stepped Shoulder Design Shoulder Connecting Fixing Shaft
,Non-standard Custom CNC Machining Stepped Pin Shaft
This semi-hollow stepped pin shaft, also known as a shoulder connecting fixing shaft, is a precision locating fastener for mechanical assembly. The stepped shoulder forms a natural limiting surface for accurate positioning during installation. The semi-hollow structure balances structural strength and lightweight performance. We use a CNC turning process to control tight tolerances, making it suitable for connection, fixing, and rotation positioning of different assemblies. Customization is available per drawings or samples to meet diversified structural requirements.
- Step shoulder design with a clear limiting surface for accurate positioning and easy control of assembly depth.
- Semi-hollow structure — lighter than a solid stepped pin, reducing overall product weight.
- CNC precision turning for a smooth, burr-free surface and stable dimensional tolerance.
- Multiple material options: carbon steel, stainless steel, brass, and aluminum alloy.
- Various surface treatments: zinc plating, nickel plating, passivation, polishing, and black oxide.
- Non-standard custom service: outer diameter, length, step size, and hollow depth can all be customized.
| Product Name | Semi-Hollow Stepped Pin Shaft / Shoulder Connecting Fixing Shaft |
|---|---|
| Process | CNC Precision Turning / Machining |
| Function | Connection, fixing, limiting, and positioning |
| Custom | Drawing / sample customization, size & material customization |
| Tolerance | Can meet IT6~IT8 precision requirement as requested |
Widely used in toy structures, electronic equipment, household hardware, hinge assemblies, automation accessories, mold locating, mechanical fixtures, and other fields. It works for connecting, fixing, limiting, and rotating joint assembly.
A1: It keeps enough mechanical strength while reducing weight and saving material cost, making it suitable for lightweight assembly.
A2: Yes, all key dimensions can be customized according to your drawing or sample.
A3: Carbon steel, SUS304 stainless steel, brass, and aluminum alloy; plating, passivation, polishing, and other surface treatments are optional.
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 60 mm, and the minimum control tolerance is 0.001 mm. We have Japanese CNC Tsugami, CNC Citizen, 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 Bos-ch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.
| 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 | +/-0.01 mm ~ +/-0.05 mm |
| 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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