Inserts for plastics
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INSERT TECHNOLOGY FOR PLASTICS 50 YEARS OF FASTENER INNOVATION

TAPPEX THREAD INSERTS LIMITED Masons Road, Stratford-upon-Avon, Warwickshire. CV37 9NT. Telephone: +44 (0)1789 206600, Fax: +44 (0)1789 414194. www.tappex.co.uk sales@tappex.co.uk ISO 9001:2000 certificate no. FM 21816 ISO 14001:2004 certificate no. EMS 94069 Tappex Thread Inserts Limited was incorporated in September 1956 by its founder the late Mr. Derrick Barnsdale. From very humble beginnings in a reclaimed cow shed on Masons Road in Stratford-upon-Avon the company flourished and grew into the modern purpose built manufacturing plant it resides in today, on the original site. With 50...

TRISERT DOUBLE ENDED A self-tapping, double ended insert available in short, regular and long lengths in a range of thread sizes from M2 to M10. Product Features The Double Ended Trisert has a lead on both ends significantly simplifying the installation process and requiring less operator skill. The combination of the three cutting flutes and the coarse external thread form increases the radial and pull-out performance making the Double Ended Trisert ideal for use in thermoplastics where there is a gap, or gasket or ‘O’ ring, between the mating parts. It can also be used in a pull-through...

TRISERT TRISERT® ADVANCED The unique Trisert self-tapping range of inserts is also available in an advanced engineered range for critical plastics and all thermoset materials . Advanced Features The closely controlled external thread allows effective cutting in hard urea, melamine and phenolic materials without cracking or moulding damage. The unique cutting form combined with the perfect symmetry of design significantly improves the performance of the insert in hard plastics. The Trisert, with its solid cylindrical design, provides significant cost savings allowing a brass insert to be...

DOUBLE ENDED / REDUCED HEADED FOAMSERT Self-tapping, double ended and reduced headed inserts available in long lengths in a range of thread sizes from M2.5 to M8. Product Features The Double Ended and Reduced Headed Foamserts share the installation benefits of the Trisert range. In addition they provide a larger external diameter, increased length and coarse truncated external thread. These additional design features make the Foamsert ideally suited for use in structural foam and other low density materials to provide increased pull-out resistance. The Foamsert may also be specified for...

MULTISERT UNHEADED A barbed, unheaded insert available in short and regular lengths in a range of thread sizes from M2 to M12. Product Features The Unheaded Multisert is for use in thermoplastics where the mating component sits flush. The plain top ring provides a good bearing surface. It should be specified for use in flexible materials which allow cold press fit insertion, for optimum production rates. For improved performance, it can be press fitted with heat or ultrasonics, when the fill of molten plastic around the barb form is maximised. Press fitting into harder or flame retardant...

MICROBARB MICROBARB MULTISERT HEADED SIZE PITCH LENGTH BARBS HEAD HEAD HOLE HOLE COUNTER- PART NO. INTERNAL NO. OF ROWS THICKNESS DIAMETER DIAMETER DEPTH SINK L T D C +0.05 Y B+0.10 M2 0.40 1.35 2 0.55 4.90 3.30 1.45 n/a 0006M2 M2.5 0.45 1.85 2 0.85 5.60 4.15 2.00 n/a 0006M2.5 M3 0.50 1.85 2 0.85 6.10 4.66 2.00 n/a 0006M3 M4 0.70 3.00 3 1.00 7.90 6.13 3.20 0.25 0006M4 M5 0.80 3.00 3 1.40 10.00 7.70 3.20 0.25 0006M5 M6 1.00 3.00 3 1.70 12.70 9.55 3.20 0.25 0006M6 M8 1.25 4.55 3 1.70 14.30 11.55 4.75 0.60 0006M8 M10 1.50 4.55 3 3.15 16.00 13.05 4.75 0.60 0006M10 HOLE DIAMETER TOLERENCE...

HiMOULD TYPE A The HiMould Type A is a blind-ended design of insert specifically for mouldingin available in a range of thread sizes from M3 to M6. Product Features The Type A insert is designed to be installed on a plain pin in the mould tool. It has all of the advantages of the more popular Type C insert but is particularly suited for use in applications where space is restricted. The short length increases its versatility and whilst shortening the bolt engagement length still provides a similar number of full threads. The HiMould Type A, part number 116-, replaces the original Yardley...

HiMOULD 18 TYPE B The HiMould Type B insert is an open ended design for moulding-in available in a range of thread sizes from M2 to M12. Product Features The Type B insert provides a low cost option where a through hole in a moulding is acceptable. The Type B insert is engineered to close tolerances enabling a guaranteed flash free thread when using fixed shouldered pins in the mould tool. Also as it offers the shortest standard length for a given thread size in the HiMould range it is ideally suited for use in thin section applications. NOTE: For thread sizes M2 and M2.5 where the...

SPECIALS ANTI-CREEP SPACERS Anti-creep spacers are designed to provide reinforced clearance holes for bolts to pass through a plastic moulding, and thus allow metal-to-metal clamping forces to be applied to an assembly without over-stressing the plastic. The design length of the spacer is carefully chosen with relation to the plastic section and the mating parts, so that the amount of clamping force applied to the plastic is limited. This prevents the plastic from “creeping away” with time and elevated temperature, which reduces the overall clamping force, allowing the bolt to loosen under...

INSTALLATION EQUIPMENT 22 FLEXIARM® The FlexiArm has been designed for the rapid cold installation of the Tappex Trisert and Foamsert. Product Features The Tappex FlexiArm installation machine consists of a pantograph arm with a Desoutter pneumatic screwdriver attached. The screwdriver can be specified with an automatic reverse torque-clutch control at either 510 rpm or 1,100rpm, or a manual reverse torque-clutch control at 510 rpm, depending upon the size of the insert and the material into which it is being installed. The FlexiArm provides a low-cost assembly solution for many different...