HELICOIL® Kits Repair solutions for damaged threads - repaired, better than new

Contents Page HELICOIL Thread inserts ® Load capacity Installation process Practical examples for thread repair Construction guidelines Technical data – Installation Thread repair HELICOIL® Kits Metrical solutions Imperial solutions Special solutions for cars Tools and equipment – Metrical HELICOIL® Twinsert Kits – Metrical Technology Thanks to continuous optimisation, the HELICOIL® Plus is now much easier to install. “Plus” refers to the special start of the thread, compared to the HELICOIL® Classic. The thread insert is a wire with rhombic profile formed into an elastic spiral. It is positioned...

HELICOIL® Thread inserts Your advantages - an overview ■ High thread loading ■ Increased quality and value ■ Wear-resistant, low and constant thread friction ■ Corrosion and temperature resistant The elastic properties of the HELICOIL® thread insert allow a uniform load and stress distribution. An optimum flank contact is achieved. Variable pitches and angles are compensated for over the entire length of the thread insert. Force transmission from bolt to nut thread is optimised. The quality of the screw joint is considerably increased - for static as well as dynamic operating loads. Due to the...

Drilling the core hole Please take note of the recommended diameters for drilling the core hole D1 HC from the table on page 7/8. Please note, that information about the twist drill B are only values for orientation. For counterboring (burring), the core hole outer diameter of the couterbore: DHC + 0.1 mm Please only use the special HELICOIL® taps. For checking the holding thread, we can offer you HELICOIL® plug limit gauge. HELICOII® Plus and HELICOII® Classic installation without leader cartridge Arrange manual tap: ■ hole in centre ■ vertical M 2 - M 16 and M 18 - M 24 (only normal pitch)...

HELICOIL® Practical examples for thread repairRepairing of damaged spark plug threads In the automotive industry, the HELICOIl® Plus thread technology is widely used to provide high strength threads. Thanks to efficient repair of damaged threads, valuable components do not have to be replaced. With HELICOIl® Plus thread inserts, cost-intensive replacements of threads in aluminium engines, such as employed in motor sports, are no longer necessary. Preventive installation of HELICOIl® Plus ensures minimum effort for thread repair during engine life. Common applications relying on threads are employed...

Guideline values for determining the length of the HELICOIL® thread insert relative to the parent material and the property class, valid for temperatures of 20 °C. The table for determination of the nominal length is valid for aluminium as well as materials with a ratio of shear stress Alloy of iron casting have a ratio of = 0.8 up to 1.4 tensile strenth shear stress tensile strenth The guideline values must be assessed so that the screw is always the weakest part of the connection. Falling short of recommended nominal lengths is acceptable if proven by testing. Intermediate lengths are also...

HELICOIL® Plus and HELICOIL® Classic - Metrical The HELICOIL® holding thread without countersink provides excellent screw entry into the thread insert. In circumstances where countersinking cannot be dispensed, e.g. for sealing surfaces that cannot be further machined the following special rules apply: Largest countersink 0 s Holding thread outside diameter 0 DHC min respectively DHC + 0.1 mm. Nominal thread diameter Thread pitch Holding thread outside diameter Core hole thread diameter Minimum depth of core hole in acc. with DIN 76 Part 1 (normal case) Nominal length of the thread insert and...

Pitch drill*) UNC/NC = American national coarse threads UN/NF = American national fine threads BSW = British standard coarse threads (Whitworth thread) BSF = British standard fine threads BSP = British Standard pipe thread • G = ISO 228/1 pipe thread

HELICOIL® Kits - Metrical solutions Standard solutions M 2 - M 16 x 1.5ISO metric threads, stainless steel A2 Contents: ■ HELICOIL® Plus thread inserts in three lengths ■ Tang break-off tool (up to M 12) Thread size Pitch I Order no. Quantity of Repair I Thread size Order no. Quantity of I Repair kit HELICOIL® kit I Refill pack Refill pack HELICOIL®

d = Nominal thread diameter (mm), P = Thread pitch (mm), L = Length (mm) M 18 - M 36 x 1.5ISO metric threads, stainless steel A2 Contents: ■ HELICOIl® Plus thread inserts ■ Hand tap (two-parts set consisting of pre and final cutter, HSS) ■ Installation mandrel (M 18 - M 24 normal pitch) ■ HELICOIl® hand tool (M 27 - M 33 normal pitch and M 18 x 1.5 - M 36 x 1.5 threads fine pitch) Thread size Pitch I Order no. Quantity of Repair I Order no. Quantity of Refill I Repair kit HELICOIL® kit I Refill pack HELICOIL® pack

Thread size Pitch I Order no. Quantity of Repair I Order no. Quantity of Refill I Repair kit HELICOIL® kit I Refill pack HELICOIL® pack d = Nominal thread diameter (mm), P = Thread pitch (mm), L = Length (mm)

Order no. I Thread size Pitch Order no. Quantity of Refill Repair assortment I Refill pack Refill pack HELICOIL® pack ISO metric threads, stainless steel A2 ■ HELICOIL® Plus thread inserts of various sizes and lengths ■ Tang break-off tools Order no. Thread size Pitch Order no. Quantity of Refill Repair assortment I Refill pack Refill pack HELICOIL® pack ISO metric threads, stainless steel A2 Empty compartments can be equipped with the dimensions M 5 and M 12. ■ HELICOIL® Plus thread inserts of various sizes and lengths ■ Tang break-off tools

Thread size Repair assortment Refill pack Contents: n HELICOIL® Plus thread inserts of various sizes and lengths n Twist drills (HSS) n Hand taps (HSS) n Installation mandrels n Tang break-off tools M 4 – M 10 ISO metric threads, stainless steel A2 M 2.5 – M 6 ISO metric threads, stainless steel A2 320 Contents: n HELICOIL® Plus thread inserts of various sizes and lengths n Twist drills (HSS) n Hand taps (HSS) n Installation mandrels n Tang break-off tools M 5 – M 12 ISO metric threads, stainless steel A2 es Contents: n HELICOIL® Plus thread inserts of various sizes and lengths n Twist drills...