Threaded insert Microbarb®

brassflatfor plastics

Barbed large-headed thread insert A barbed, large headed insert available in extra short lengths in a range of thread sizes from M2 to M10. The Microbarb ® incorporates the same features as the headed Multisert range but with a shorter overall length. This means it is optimised for pull-through applications in thin section materials due to the full size head geometry. Tappex Microbarb Larger head and barb diameter The design incorporates a larger head and barb diameter to provide increased bearing surfaces. For larger thread sizes the back of the head is chamfered to reduce the apparent projection. Maximum thread engagement is achieved by countersinking the limited thread length at only one end. To provide optimum performance the plastic component’s material section should be designed to be slightly in excess of the Microbarb under-head length. This ensures that upon assembly a clamp with the mating part is achieved, whilst limiting the compression of the plastic itself. Insert ideal for use in thin materials The Microbarb is ideal for use in vacuum formed, rotational moulded and fabricated components in Thermoplastics but has some limitations in Thermoset materials (contactable the Tappex sales office for further details – we may recommend heat-installation instead). Microbarb® Features The Microbarb Multisert has been designed with a larger head and barb diameter and is a development of the highly successful Multisert® that provides increased bearing surfaces in thin section materials.