CSA-31X Tube Shielding Kit Retractable Lens Tube Shading Assembly Optical Path With SM External Thread Tube Accessories
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CSA-31X Tube Shielding Kit Retractable Lens Tube Shading Assembly Optical Path With SM External Thread Tube Accessories

$21.78
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Product information   Model CSA-31X Specification 39.0*30.5mm Name Casing Shielding Kit Diameter SM1(1.035"-40) Stretchable length 31mm~50mm Maximum stroke 19mm Material #7075 Aluminum alloy Net weight 69.5g     Optical commonly used thread size standard This is the unique thread of Thorlabs in the United States, not the commonly used optical thread. SM is the code for the thread of the sewing machine in terms of thread expression, but this company in the United States uses it to connect the internal and external threads of the optical lens and the sleeve. The nature of the thread is UNS, and the United States has a special thread with a tolerance accuracy of 2A / 2B. The special place of this thread is 40 teeth per inch regardless of the diameter. The specific dimensions are as follows: Characteristic ▶Achieve light leakage shielding between cage plate and cage plate, or cage plate sleeve in a 30mm cage system; ▶The shield can

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