Description
Product Description
- Precision-ground stainless steel rods with a diameter of 12mm.
- Length range: 20mm to 100mm, offering multiple options.
- Optional thread configurations: One end M4 thread + one end unthreaded; or M4 threaded holes at both ends.
- A Ø3mm through hole on the side allows a ball-head screwdriver or wrench to pass through, providing greater torque during component tightening.
The Ø12mm optical rods are fundamental components for constructing numerous rigid structures. Available in various lengths from 20mm to 100mm, they are compatible with our rod holders and structural accessories.
| General Parameters | Specifications |
| Product Name | Ø12mm Stainless Steel Rods |
| Diameter | Ø12mm |
| Thread Type | M4 |
| Material | 304 stainless steel |
| Model | Length | Thread Type | Weight |
| PCA30-M4 | 30mm | One end M4, one end unthreaded | 25.1g |
| PCA40-M4 | 40mm | Same as above | 33.6g |
| PCA50-M4 | 50mm | Same as above | 42.2g |
| PCA60-M4 | 60mm | Same as above | 51.1g |
| PCA70-M4 | 70mm | Same as above | 60.0g |
| PCA80-M4 | 80mm | Same as above | 68.5g |
| PCA90-M4 | 90mm | Same as above | 77.4g |
| PCA100-M4 | 100mm | Same as above | 86.0g |
| Model | Length | Thread Type | Weight |
| PCA2-S2 | 20mm | M4 threaded holes at both ends | 15.5g |
| PCA3-S2 | 30mm | Same as above | 24.3g |
| PCA4-S2 | 40mm | Same as above | 33.1g |
| PCA5-S2 | 50mm | Same as above | 41.3g |
| PCA6-S2 | 60mm | Same as above | 50.0g |
| PCA8-S2 | 80mm | Same as above | 66.9g |
| PCA10-S2 | 100mm | Same as above | 85.0g |
Technical Description
The Ø12mm optical rods are fundamental components for constructing numerous rigid structures. Available in various lengths from 20mm to 100mm, they are compatible with our rod holders and structural accessories.

The PCA-M4 series rods feature an M4 threaded hole on the top, with a depth of 7~12mm (shorter rods have shorter hole depths). The end of the rod is smooth and unthreaded. A Ø3mm through hole on the side allows a ball-head screwdriver or wrench to pass through, providing greater torque during component tightening.

The PCA-S2 series rods are equipped with M4 threaded holes at both ends, with a depth of 7~12mm (shorter rods have shorter hole depths). They support bidirectional connection and are compatible with various optomechanical components.

Application Schematic

Assembly

Application Example
Stainless steel rods are available in various lengths, playing an irreplaceable role in free-space optical experiment adjustment and manual optical path calibration. They can be used to install various optomechanical components arbitrarily.

Engineering Drawing Download
![PCA-M4 Series & PCA-S2 Series Ø12mm Stainless Steel Rods [M4 Thread]](https://i0.wp.com/laserland.com/wp-content/uploads/2026/01/PCA-M4%E7%B3%BB%E5%88%97-PCA-S2%E7%B3%BB%E5%88%97-%E5%9B%BE%E7%89%871.jpg?fit=400%2C363&ssl=1)
![PCA-M4 Series & PCA-S2 Series Ø12mm Stainless Steel Rods [M4 Thread] - Image 2](https://i0.wp.com/laserland.com/wp-content/uploads/2026/01/PCA-M4%E7%B3%BB%E5%88%97-PCA-S2%E7%B3%BB%E5%88%97-%E5%9B%BE%E7%89%873.jpg?fit=800%2C642&ssl=1)
![PCA-M4 Series & PCA-S2 Series Ø12mm Stainless Steel Rods [M4 Thread] - Image 3](https://i0.wp.com/laserland.com/wp-content/uploads/2026/01/PCA-M4%E7%B3%BB%E5%88%97-PCA-S2%E7%B3%BB%E5%88%97-%E5%9B%BE%E7%89%874.jpg?fit=800%2C642&ssl=1)
![PCA-M4 Series & PCA-S2 Series Ø12mm Stainless Steel Rods [M4 Thread] - Image 4](https://i0.wp.com/laserland.com/wp-content/uploads/2026/01/PCA-M4%E7%B3%BB%E5%88%97-PCA-S2%E7%B3%BB%E5%88%97-%E5%9B%BE%E7%89%872.jpg?fit=800%2C549&ssl=1)



