0100/16.
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.
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.
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.
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.
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.
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.
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 Surfaces Materials Designs 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.
Nimonic 90 material No 2.4632 Cadmium plated BA BS 93 HELICOIL® Classic Free Running HELICOIL® Classic Screwlock Materials HELICOIL® Tangfree Screwlock Thread types BSF BS 84 Designs BSW BS 84 Aluminium material No 3.4365 Silver plated Hard coated Surfaces UNF thread NASM 21209 Coloured: red, green, blue, yellow Not all combinations are viable. 0130/12.02 0180/12.02 HELICOIL® Plus Repairing of damaged threads Catalogue No 0180 http://www.boellhoff.
HELICOIL® Plus thread technology Materials The overview table shows the most common materials with specifications. Materials 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 1400 N/mm2 * Stainless steel A 4 X6 CrNiMoTi 17 12 2 √ material No 1.
HELICOIL® Plus design guidelines Determination of nominal length Guide values to determine the minimum length of the HELICOIL® Plus thread insert depending on parent material and screw property class, valid for 20°C. Strength of parent material Tensile strength Rm (N/mm2)* to Screw property class 3.6 4.8 4.6 5.8 6.8 5.6 6.6 6.9 8.8 9.8 10.9 12.9 14.9 100 1.5 d 1.5 d 2.5 d 2.5 d 3.5 d 3.5 d – – – > 100 – 150 1.5 d 1.5 d 2.5 d 2.5 d 2.5 d 2.5 d 2.5 d 2.5 d 3.
Aluminium steering gear casing HELICOIL® Plus Free Running M 14 x 1.
Magnesium bracket (G-AlSi9 Mg) HELICOIL® Plus Free Running M 8 x 12 Fields of application for HELICOIL® Plus thread inserts Gear box housing of magnesium alloys Thread reinforcement for oil drain plugs Exhaust systems Satellite technology Aeroplane engines Repeated installations Oil drain hole of an aluminium car oil sump Thread reinforcement with HELICOIL® Plus Free Running M 14 x 1.
HELICOIL® Plus installation HELICOIL® Plus thread inserts can be easily and economically installed because there are only a few basic rules to observe. There is a broad range of installation tools for efficient installation – for individual applications as well as for large-scale production. Installation phases are as follows: Drilling Common twist drills are used. Notes on diameter and tapped hole depth are given on pages 18 to 23. Prior to tapping, counter-bore 90° and deburr.
HELICOIL® Plus thread inserts Technical data Insertion of thread insert The installation can be done manually, automatically or with machine tools. The HELICOIL® Plus thread insert is screwed onto the installation mandrel with the tang down (a), inserted into the leader cartridge (b) or placed on the fly-over tool (c). Then, the tool is placed over the tapped hole.
HELICOIL® Plus thread inserts Free Running W HELICOIL® Plus thread inserts Screwlock notch t2 min.* W notch P xd mm W 0.40 1.0 d 1.5 d 2.0 d 2.5 d 3.0 d 2.0 3.0 4.0 5.0 6.0 2.9 4.9 6.9 8.9 10.9 0.45 1.0 d 1.5 d 2.0 d 2.5 d 3.0 d 2.5 3.75 5.0 6.25 7.5 3.5 5.9 8.1 10.5 12.9 0.5 1.0 d 1.5 d 2.0 d 2.5 d 3.0 d 3.0 4.5 6.0 7.5 9.0 3.9 6.3 8.7 11.1 13.5 0.6 1.0 d 1.5 d 2.0 d 2.5 d 3.0 d 3.5 5.25 7.0 8.75 10.5 3.7 6.3 8.7 11.2 13.3 tang 0.7 1.0 d 1.5 d 2.0 d 2.5 d 3.0 d 4.0 6.0 8.0 10.
HELICOIL® Plus thread inserts t2 min.* d P xd mm W 1.25 1.0 1.5 2.0 2.5 3.0 d d d d d 9.0 13.5 18.0 22.5 27.0 5.3 8.6 11.9 15.3 18.1 1.5 1.0 1.5 2.0 2.5 3.0 d d d d d 10.0 15.0 20.0 25.0 30.0 5.0 8.1 11.2 14.2 17.2 1.0 1.0 1.5 2.0 2.5 3.0 d d d d d 10.0 15.0 20.0 25.0 30.0 7.6 12.1 16.3 20.7 25.0 M 10 x 1.25 1.25 1.0 1.5 2.0 2.5 3.0 d d d d d 10.0 15.0 20.0 25.0 30.0 6.0 9.7 13.1 16.9 20.1 M 11 1.5 1.0 1.5 2.0 2.5 3.0 d d d d d 11.0 16.5 22.0 27.5 33.0 5.6 9.0 12.3 15.7 19.
HELICOIL® Plus thread inserts t2 min.* M 14 M 14 x 1 P 2.0 1.0 M 14 x 1.25 1.25 M 14 x 1.5 M 16 M 16 x 1.5 M 18 M 18 x 1.5 M 18 x 2 1.5 2.0 1.5 xd mm W 1.0 1.5 2.0 2.5 d d d d 14.0 21.0 28.0 35.0 5.6 8.8 12.0 15.2 1.0 1.5 2.0 2.5 d d d d 14.0 21.0 28.0 35.0 D1HC min. max. min. max. 16.80 17.20 14.43 14.73 11.2 17.2 23.2 29.2 16.80 17.20 14.22 14.41 4.6 7.4 9.1 10.2 16.80 17.20 14.27 14.48 spark plug thread d d1 8.4 12.4 14.4 16.4 1.0 1.5 2.0 2.5 d d d d 14.0 21.
HELICOIL® Plus thread inserts t2 min.* d M 20 M 20 x 1.5 M 20 x 2 M 22 M 22 x 1.5 M 22 x 2 M 24 M 24 x 1.5 M 24 x 2 P xd mm W 2.5 0.50 0.75 1.00 1.50 2.00 d d d d d 10.0 15.0 20.0 30.0 40.0 2.7 4.5 6.3 10.0 13.7 1.5 0.50 0.75 1.00 1.50 2.00 d d d d d 10.0 15.0 20.0 30.0 40.0 4.9 7.9 10.7 16.7 22.4 2.0 0.50 0.75 1.00 1.50 2.00 d d d d d 10.0 15.0 20.0 30.0 40.0 3.5 5.8 8.0 12.5 16.8 2.5 0.50 0.75 1.00 1.50 2.00 d d d d d 11.0 16.5 22.0 33.0 44.0 3.0 5.0 6.9 10.9 15.0 1.5 0.
HELICOIL® Plus thread inserts t2 min.* d M 26 x 1.5 M 27 M 27 x 1.5 M 27 x 2 M 28 x 1.5 M 30 M 30 x 1.5 M 30 x 2 M 33 P xd mm W 1.5 0.50 0.75 1.00 1.50 2.00 d d d d d 13.0 19.5 26.0 39.0 52.0 6.5 10.3 14.0 21.6 29.1 3.0 0.50 0.75 1.00 1.50 2.00 d d d d d 13.5 20.3 27.0 40.5 54.0 3.2 5.0 7.1 11.4 15.4 1.5 0.50 0.75 1.00 1.50 2.00 d d d d d 13.5 20.3 27.0 40.5 54.0 6.7 10.7 14.6 22.6 30.0 2.0 0.50 0.75 1.00 1.50 2.00 d d d d d 13.5 20.3 27.0 40.5 54.0 5.1 7.9 10.8 16.8 22.
HELICOIL® Plus thread inserts t2 min.* d M 33 x 2 M 36 M 36 x 1.5 M 36 x 2 M 36 x 3** M 39 M 39 x 2 M 39 x 3 M 42 P xd mm W 2.0 0.50 0.75 1.00 1.50 2.00 d d d d d 16.5 24.8 33.0 49.5 66.0 6.4 10.1 13.7 21.2 28.4 4.0 0.50 0.75 1.00 1.50 2.00 d d d d d 18.0 27.0 36.0 54.0 72.0 3.2 5.0 7.0 11.1 15.2 1.5 0.50 0.75 1.00 1.50 2.00 d d d d d 18.0 27.0 36.0 54.0 72.0 9.5 14.7 19.9 30.5 41.0 2.0 0.50 0.75 1.00 1.50 2.00 d d d d d 18.0 27.0 36.0 54.0 72.0 6.8 10.3 14.1 21.9 31.1 3.
