HELICOIL® Plus
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Thread technology for high-strength fastenings – metric threads

System modules – the fastener A close look at the advantages Modular system Design guidelines Technical data and item numbers System modules – the tool The thread Thread tolerances and tapped hole Manual taps Machine taps Combined drilling and tapping tools Machine forming taps Threaded plug gauges Repair kits and repair range kits Installation Installation mandrels Installation tools Battery installation tools Electrical installation tools Pneumatic installation tools Automatic installation Manual installation tools Tang break-off and extraction tools Large picture (left): Application...

® HELICOIL thread inserts Can you imagine a world without screws? Even today, the screw is the most widely used fastening element for detachable joints. Optimised tightening methods and high-strength screws allow constant improvement. Considerably higher forces can be transmitted so that the dimension or total number of required screws can be reduced. However, only highly sustainable nut threads permit high-strength screw joints. This is where our HELICOIL® thread technology is used. Your advantages – an overview: n High thread loading n Increased quality and value n Wear-resistant, low and...

® HELICOIL thread inserts Structural component – thread reinforcement and repair HELICOIL® is thread reinforcement and repair. Threads are reinforced whenever low-strength materials (e.g. aluminium, aluminium-magnesium alloys and fibrereinforced plastics) are used. The nut thread is wear-resistant even in cases of frequent use. HELICOIL® allows miniaturisation and lightweight construction for the development of production parts. The HELICOIL® thread insert has been tried and tested for more than 60 years and has become a widely used structural component. Worldwide, HELICOIL® thread inserts...

® HELICOIL thread technology ® HELICOIL Plus Free Running* Every thread of the thread insert with precision-formed, rhombic profile is Free Running. The result is an internal thread true to gauge that can be used from both ends. The dimensional stability of the ISO thread complies with DIN 13 6H as well as for special requirements with 4H and meets the demands on international standard specifications. The advantages of the HELICOIL® Plus system are particularly apparent with respect to processing and tools and result in shorter cycle times. ® HELICOIL Plus Screwlock* This thread insert has...

® HELICOIL Tangfree Free Running** You do not need a tang to install these thread inserts. Therefore, tang break and removal are not required. Combined with the matching installation tools, the current innovation status in the HELICOIL® technology is a perfect addition to the HELICOIL® product family. Simply order the separate catalogue No 0150. ® HELICOIL Tangfree Screwlock** HELICOIL® Tangfree Screwlock has the same advantages as HELICOIL® Tangfree. In addition, there is a screw-locking area. The screw is locked by one or several polygonal-shaped threads clamping the flanks of the screwed...

® HELICOIL thread inserts – a close look at the advantages Wear resistance HELICOIL® Plus thread inserts are made of austenitic chrome-nickel steel (minimum tensile strength 1,400 N/mm²). The high surface quality of the rolled thread ensures a high-strength, wear-resistant thread with an extremely small and constant thread friction torque. Therefore, a higher, constant preload-force is achieved for repeated cycles at the same tightening torque. The utilisation of the yield point of high-strength screws is improved. Torsion stress is considerably reduced. Compared to tapped threads, the...

Tight fit When not installed, the outside diameter of the HELICOIL® Plus exceeds the receiving thread by a defined amount. In combination with the high spring force of the material, this difference in dimension results in radial expansion and therefore in the tight and clearance-free fit in the nut thread. Additional locking elements or adhesive – as are common for fixed bushes — are therefore obsolete. If you use impact wrenches, please contact us. We will be happy to help you. Screw locking Thread technology and the polygonal-shaped thread of the HELICOIL® Plus Screwlock lead to a high...

® HELICOIL modular system Metric coarse thread DIN ISO 13 1 Metric fine thread DIN ISO 13 (T02–T11) HELICOIL® Plus Free Running Stainless steel A2 material No 1.4301 Thread types The HELICOIL® has been tried and tested for more than 60 years and has become a renowned structural component. There is a solution to almost every task related to this thread technology. Stainless steel A4 material No 1.4571 HELICOIL® Plus Screwlock - imperial threads UNC, UNF, BSW, BSF, BSP/G, BA ® HELICOIL Plus Imperial thread inserts for metals Catalogue No 0101 Thread technology for high-strength fastenings...

Cadmium plated HELICOIL® Classic Free Running HELICOIL® Classic Screwlock HELICOIL® Tangfree Screwlock Thread types Silver plated Hard coated Coloured: red, green, blue, yellow ® HELICOIL Plus Repairing of damaged threads Catalogue No 0180 http://www.boellhoff.de/ en/thread-repair THE BLUE BOOK Aerospace Buyer’s Directory to HELICOIL® Wire Thread Inserts Catalogue No 0130 THE BLUE BOOK Aerospace Buyer’s Directory To HELICOIL® Wire Thread Inserts HELICOIL® Plus repairing of damaged threads http://www.boellhoff.de/ the-blue-book

® HELICOIL Plus thread technology Materials The overview table shows the most common materials with specifications. Minimum tensile strength at room temperature Temperature resistance Stainless steel A 2 X5 CrNi 18 10 material No 1.4301 low temperature –196°C short-term 425°C long-term 315°C low temperature –196°C short-term 425°C long-term 315°C n Standard applications for all property classes and materials ¬ Stainless steel A 4 X6 CrNiMoTi 17 12 2 √ material No 1.4571 n General lightweight construction e.g. of aluminium, magnesium or aluminium alloys ¡ n Increased corrosion protection n...