The base of this design bonding fasteners is a circular mild steel plate of diameter 23mm. This relatively small base size reduced weight and allows the fastener to be used in small spaces.
The base is punctuated with holes to facilitate a number of fixing options - most notably by inclusion into GRP moulded products or by bonding with structural adhesives.
Securely welded to the base is a machine-threaded mild steel tube. The base of this tube is closed so as to prevent threaded rods that are screwed into the fastener from penetrating the base of the fastener.
Common sizes are shown in the table below and custom designs are often supplied for specific applications (subject to minimum order quantities).