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Mechanical Essentials Kit: Optical Mounts

  • Choose from Three Kits
  • Heavy-Duty, Welded Steel Cabinet Frame
  • Cabinet Frame Can Be Wall Mounted or Stacked
  • Equipped with Easy-to-Read Labels


Assorted Optical Mounts Kit


Ø1/2" Optical Mounts Kit

See Contents Tab for Included Items

Related Items

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Back Side of ESK Kit
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Slots on the rear of the case allow for wall mounting.
Limited Stock Icon

The ESK05(/M) will be retired without replacement when stock is depleted. If you require this part for line production, please contact our OEM Team.


  • Imperial and Metric Kits
  • Frame Dimensions (L x W x H): 17" x 11" x 11" (432 mm x 279 mm x 279 mm)
  • Drawer Dimensions (L x W x H): 10.56" x 5.19" x 3.06" (268 mm x 132 mm x 78 mm)
  • Easy-to-Read Labels List Contents for Each Drawer
  • Increased Savings Over Individual Component Products

These kits contain our most popular kinematic, fixed, translational, and rotational optical mounting components for various optic sizes. Refer to the Contents tab above for detailed information about the components included with the imperial and metric versions of each kit. Complement these kits with our ESK01 (ESK01/M) Bases and Post Holders and ESK16 (ESK16/M) Posts and Accessories Essentials Kits.

Mounting Options
The kit can be stored on a tabletop for easy, convenient access or placed on an RK4101 or RK4102 rack shelf, both of which can be installed in our RK3884 standard 19" rack. The image to the right shows an ESK18 kit as well as another custom-labeled S19909 cabinet installed in a 19" rack. The cabinet used in each Essential Series Kit features slots in the rear of the case (see image to far right) for wall mounting and features indentations on the top and four feet on the bottom for stable stacking. Warning: ensure that the wall and wall mounts can support such weights before mounting the unit.

Kit Components

Click on the yellow bars below to view the contents of each kit. Each kit includes the listed components and an S19909 9-Drawer Cabinet. In cases where the metric and imperial kits contain parts with different item numbers, metric item numbers and measurements are indicated in parentheses.

ESK05 SmartPack Packaging
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ESK05 Packaging

Smart Pack

Item #% Weight
ESK05 83.10% 87.67 kg
ESK05/M 83.10% 96.59 kg

Smart Pack

  • Reduce Weight of Packaging Materials
  • Increase Usage of Recyclable Packing Materials
  • Improve Packing Integrity
  • Decrease Shipping Costs

Thorlabs' Smart Pack Initiative is aimed at waste minimization while still maintaining adequate protection for our products. By eliminating any unnecessary packaging, implementing packaging design changes, and utilizing eco-friendly packaging materials for our customers when possible, this initiative seeks to improve the environmental impact of our product packaging. Products listed above are now shipped in re-engineered packaging that minimizes the weight and the use of non-recyclable materials.b As we move through our product line, we will indicate re-engineered packages with our Smart Pack logo.

  • Travel-based emissions reduction calculations are estimated based on the total weight reduction of packaging materials used for all of 2013’s product sales, traveling 1,000 miles on an airplane, to provide general understanding of the impact of packaging material reduction. Calculations were made using the EPA’s shipping emissions values for different modes of transport.
  • Some Smart Pack products may show a negative weight reduction percentage as the substitution of greener packaging materials, such as the Greenwrap, at times slightly increases the weight of the product packaging.

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Optical Mounts Kits

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
ESK05 Support Documentation
ESK05Assorted Optical Mounts Essentials Kit, Imperial and Universal Components, 57 Pieces
ESK17 Support Documentation
ESK17NEW!Ø1/2" Optical Mounts Essentials Kit, Imperial and Universal Components, 82 Pieces
ESK23 Support Documentation
ESK23NEW!Specialty Optical Mounts Essentials Kit, Imperial and Universal Components, 56 Pieces
+1 Qty Docs Part Number - Metric Price Available
ESK05/M Support Documentation
ESK05/MAssorted Optical Mounts Essentials Kit, Metric and Universal Components, 57 Pieces
ESK17/M Support Documentation
ESK17/MNEW!Ø1/2" Optical Mounts Essentials Kit, Metric and Universal Components, 82 Pieces
ESK23/M Support Documentation
ESK23/MNEW!Specialty Optical Mounts Essentials Kit, Metric and Universal Components, 56 Pieces
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