Large Washer Bonding Studs
The Large Washer Bonding Stud is the load-spreading member of the bonding fastener family. Its base is an oversized washer flange, which increases the bonded area and therefore the total force the joint can carry. Because stress is distributed over a wide footprint instead of concentrated at a point, thin and brittle substrates are far less likely to crack or delaminate under load.
The bottom surface of the base is finely treated to promote adhesion, so the adhesive wets the metal and forms a molecular-level bond rather than sitting on top of it. Combined with the large contact area, this gives the stud high pull-out and shear strength while keeping the installed height low and the appearance clean.
Nothing is drilled, riveted or welded, which is essential on glass, carbon fiber and other high-strength composites where a hole would create a stress concentration or compromise a sealed surface. The stud simply becomes part of the panel, providing a strong threaded support point wherever one is needed.
Widely used in aerospace composite components, large yacht hulls, lightweight automotive bodies and architectural glass curtain walls, the large washer bonding stud suits brittle or high-strength composite surfaces where drilling or riveting is impossible.
It meets the demands of high-end manufacturing for structural weight reduction, uniform load distribution and long service life — particularly on visible surfaces where holes are unacceptable and on load-bearing composite panels that must carry point loads safely.
