Optical Post, 355.6 mm Height, 38.1 Diameter, M6 Thread

The M-40 Standard Metric Rod has suitable sturdiness for most general laboratory applications. Made entirely of steel, it has a 38.1 mm diameter and is 355.6 mm tall. Steel provides much greater dynamic rigidity than aluminum due to its almost order-of-magnitude greater material loss factor. This means the M-41 rod has a high resonant frequency and correspondingly low vibration amplitude required for optical laboratory use. Also, with its inherently greater stiffness and strength, it supports larger loads with greater stability. Steel construction has other advantages such as half the thermal expansion coefficient of aluminum and a higher heat capacity so thermal stability is enhanced.
1.5 inch Diameter Steel Tubing Construction
Newport optical support rods are made of 1.5 in.(38.1 mm) diameter steel tubing, whose material properties allow for greater dynamic rigidity than aluminum designs, as well as thermal stability. The optical support rods are made round to < 1/1000 of an in. (12 µm) for precise, reproducible mating of rod-mounted components. The matte finish of the rods provides a low-reflectivity surface that is resistant to gouging, scratching and corrosion. The hollow-core construction provides even the standard (undamped) support rods with lower vibration amplitudes and higher resonant frequencies, often preferred for sensitive optical systems. The inherently greater stiffness and strength of these steel rods provides its support for larger and heavier optical components.
Convenient Table Mounting
Accessories for a Variety of Applications
Newport has designed several accessories that securely mount onto 1.5 in. rods to support and enhance a variety of applications. Optical support platforms are available to provide stable mounting surfaces for optical components at any orientation, angle and height on the post. Our Quick Disconnect Optical Rod Clamps allow components to be detached and attached quickly and easily, which is beneficial when changing or experimenting with different setups. The 625-RC Kinematic Mirror Mounts enable precise beam positioning for 2, 4, and 6 in. diameter mirrors, with either 100-TPI adjustment screws or micrometers for an orthogonal 10° angular adjustment range.
Resources & Downloads
2D Product Drawings
Models 40-41-S(70.7 kB, PDF)
Related Products
Frequently Purchased Together
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | M-340-RCPost Clamp, 38.1 mm Diameter Posts, M6 Thread | |||||
![]() | M-360-90Angle Bracket, 90°, 1/4-20 (M6) Slots, 25 mm Spacing | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M-370-RCPost Clamp, 38.1 mm Diameter Gear Rack Posts, M6 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Similar
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | M-70Optical Post, Gear Rack, 355.6 mm Height, 38.1 Diameter, M6 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M-41Optical Post, 177.8 mm Height, 38.1 Diameter, M6 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | 40Optical Post, 14 in. Height, 1.5 in. Diameter, 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | 70Optical Post, Gear Rack, 14 in. Height, 1.5 in. Diameter, 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M-71Optical Post, Gear Rack, 177.8 mm Height, 38.1 Diameter, M6 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Compatible
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | M-340-RCPost Clamp, 38.1 mm Diameter Posts, M6 Thread | |||||
![]() | M-32AOptical Post Positioner, Cap Screw, 18 mm Adjustment, 38.1 mm Post, M6 | |||||
![]() | M-300-POptical Post Platform, 38.1 mm Diameter Post, 3 Mounting Surfaces, M6 | |||||
![]() | M-34Rotatable Post Platform, Arbitrary Angle Mounting, 1.5 in. Post, M6 | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M-VPBXY Adjustable Base, M6 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M-SR-SCPost Clamp, Sliding, 38.1 mm Diameter Posts and Pillars, M4 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | M-SR-BPedestal Mounting Base, 38.1 mm Diameter Posts, M6 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |


















