Press-in insert Multisert®

brassround

Threaded inserts for Engineering plastics The Tappex Multisert® range of brass thread inserts for plastics has been developed to be a multi-purpose insert for a wide variety of industry applications; range includes four primary designs: Unheaded, Single Thickness Headed (at standard & reduced diameters) & Double Thickness Head. Lengths normally stated in mm. Multisert® – Unheaded – Product Features The most significant feature of the Mulitisert is its barb form that makes the insert suitable for different installation methods. The designer can therefore increase pull-out performance using the same insert by changing from press-fitting cold to heat or even ultrasonic insertion. External barb form gives good flow characteristics and high pull-out performance. Plain top ring gives a good bearing surface for mating components and traps any molten plastic forced upwards during insertion providing a clean flush fit (correct hole size must be used). Free running internal thread – the insert is set in the plastic independently from the expansion action of the mating screw. This prevents rotation or screw breakage during assembly. Plain location spigot and pilot barb ensures that the insert locates squarely in the drilled or moulded hole prior to assembly. Multisert® – Unheaded – Design Aids It should be specified for press-in applications in flexible thermoplastics, installation can be adjacent to the moulding machine for operation efficiency It can be installed into most thermoplastics by heat or ultrasonics to give higher resistance to pull out loads It should be specified for small or medium volume usage where there are a limited number of inserts per moulding