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FASTENERS & ADHESIVESThreaded FastenersNext generation threaded insertsfor critical applicationsTappex has taken threaded inserts to the next level with thelaunch of the Trisert-3. Suitable for use in plastic and metalalloys, it is designed to withstand harsh environments andcorrosive atmospheres, making it ideal for critical applicationsThe Tappex name has been synonymous withthreaded inserts for over 50 years, with thecompany building its name on designing,developing and manufacturing inserts to meet the everchangingdemands of the plastics industry. The widerange of self-tapping inserts under the Trisert brandwere developed specifically to solve the requirements ofboth the established thermoset market and theincreasing high-strength thermoplastic applications,where installation time and reliability are of primeimportance.The standard Trisert range has for many yearsincluded three primary designs, with double ended,reduced headed and regular headed variants. Thesesolve most application problems in thermoset andthermoplastic grades, including the latest engineeringplastics. The concept of the Trisert design is to providea reliable and efficient post-mould process, where theinstallation torque can be controlled and monitored forgreater reliability. As the internal thread is used toinstall the Trisert, every insert is therefore automaticallychecked in the moulding for the existence of a goodthread.Now Tappex has expanded its range with theintroduction of the Trisert-3, developed to expand theTrisert range into more critical applications. Trisert-3has three cutting features to provide more balancedcutting forces and therefore reduced installation torquewhen compared to the many cross-slot designsavailable that only have two cutting features. Thedesign combines three cutting facets with three shallowflutes offering balanced cutting and enhanced back outperformance. The internal thread is not interrupted bycutting features and therefore will guarantee a freerunning internal thread without the risk of swarfjamming the screw.The Trisert-3 design maintains the completecylinder design that provides a stronger body, size-forsize,than the slotted design and also allows it to beused in pull-through applications, without anyproblems due to increased assembly torque associatedwith slotted inserts.Trisert-3 is available in two lengths – regular andlong – and is based upon the Trisert reduced headeddesign. This provides an increased bearing surface thatnot only allows higher tightening torques to be applied,but also provides more support to softer matingcomponents. The head diameter is designed to exactlyfit the counter bore in the prepared hole, and thuspresents a neat flush fit finish, where required.In most applications into plastic, the standard brassTrisert offers a satisfactory and economic solution withgood wear resistance and strength. Also it willwithstand corrosion in most environments without anysecond operation surface treatment. But to meet therequirements of a wider range of host materials andharsher applications, the selection of the material forthe Trisert-3 was very important. Thus the Trisert-3 isoffered in two grades of Stainless Steel (303 and 316)and also in case hardened steel with a zinc nickel,trivalent passivated finish.A key feature of the Trisert-3 is its ability towithstand critical environmental conditions, such asmarine and chemical/food processing, while stillretaining good wear resistance and strength.MORE INFORMATION:Enter J445 on the enquiry card, or visit ‘latest issue stories’ atwww.industrialtechnology.co.uk for further details from Tappexand more stories on mechanical fastenersFor more information on automationequipment, and other machinebuilding technologies, visitwww.industrialtechnology.co.uk44More details: Write in 440 on the free information card
Unifast Fastening Systems Ltd . +44 (0)1420 563333 . info@unifast.co.uk . www.unifast.co.ukFastenersorFastening Solutions?Unifast has the answerFAST TurnThe quick acting panel fixingfastener system used bymanufacturers throughoutthe automotive, aerospaceand other industries.KAPti-nutA high strength, captive threaded fasteningsystem for sheet metal, ideallysuited to multiple and automatedinsertion into thin gauge steel, aluminiumand pre-finished materials.Unifast Fastening Systems Ltd . Woodlea Park . Four Marks . Alton . Hants . GU34 5AZMore details: Write in 450 on the free information cardMore details: Write in 452 on the free information cardTRISERT-3THE NEW STAINLESS STEEL INSERTFROM TAPPEX• For plastic andmetal alloyapplications incritical environments• Stainless Steel 303and 316 plus casehardened steel witha zinc nickel, trivalentpassivated finishnew extensivetechnical literaturenow available+44 (0) 1789 20 66 00sales@tappex.co.ukwww.tappex.co.ukLeading Insert <strong>Technology</strong>More details: Write in 451 on the free information cardMore details: Write in 453 on the free information card 45
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