BigHead's® bondable Male TwinDisks® efficiently transfer tensile, shear and lateral loads to both skins of honeycomb, sandwich & composite panels, providing a lasting heavy-duty threaded stud as a fastening point. Male TwinDisks® are available in 2 basic designs - Symmetric & Asymmetric, each with a variety of disk/stud size combinations to satisfy your specific application requirements. EFC Representatives can assist you in selecting the correct configuration to suit your needs.
Unit of Measure



N/A BigHead®


N/A 316 Stainless Steel

Thread Size

N/A 4.75 mm


N/A Symmetrical

Head Diameter

N/A 23 mm

Stud Diameter

N/A 16.00 mm


N/A Male

Disk Diameter

N/A 20 to 50 mm



N/A Ideal for floors, walls, cladding & composite panels

Additional Information

Additional Information

N/A Easy Installation:
  1. Drill Hole down to the inner surface of the bottom skin
  2. Apply Adhesive
  3. Push TwinDisk® into the cavity
  4. Wind the Top Disk down to the surface of the top skin
  5. Glue into place

Features and Benefits

Features and Benefits

  • Symmetric & Asymmetric - Same or Different Sized Disks
  • Blind Application
  • Stud Sizes - M4-M16 x 16-100mm
  • Marine & Municipal Transport seating
An installation diagram is included in the photo gallery on this page. The part below is just one example of a wide range of sizes and types available.



N/A Please contact EFC International to learn more about TwinDisks®.
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