Check the listing for details. Thorlabs S1PLM38 - SM1-Threaded Delrin Mount (Qty. 2). Condition: New – Open box. Listed at 40.00 USD. Condition - New, Open Box, Qty 2 Thorlabs offers laser diode lens tube mounts fabricated from Delrin for mounting laser diodes in TO-38, TO-46, Ø5.6 mm, Ø9 mm, and TO-5 packages. Mounts are available with either SM05 (0.535"-40) or SM1 (1.035"-40) external threading. The Delrin material provides electrical insulation between the laser diode case and our aluminum lens tubes. These laser diode mounts are designed such that the laser diode is aligned to the optical axis of the lens tube, enabling easy assembly of lens-tube-based setups. The laser diode can be directly inserted into the mount and held in place with the included black-anodized aluminum retaining ring (see the table to the right for details). The S1PLM05 comes with a Delrin retaining ring instead of the aluminum retaining ring included with the other Delrin mounts. Our SPW801 Adjustable Spanner Wrench can be used to secure the laser diode into any of these mounts. Alternatively, the table to the right also lists the compatible fixed spanner wrench for each mount, if available. The mount and retaining ring should both be at room temperature before adjustment. Each laser diode mount, other than the S1LM05, is equipped with internal 13/32"-40 threads that allow our ESD protection and strain relief cables to be attached. Instead of 13/32"-40 threads, the S1LM05 has internal SM05 threads. To operate and control the mounted laser diodes, please see our line of laser diode current controllers. If your application requires mounting a temperature-controlled laser diode into a lens tube setup, please see our lens-tube-compatible temperature-controlled laser diode mounts. Please note that Delrin is an electrically and thermally insulating material. The maximum operating temperature for these mounts is 185 °F (85 °C).