HeliCoil Screw Thread Insert STI Taps

HeliCoil taps are also referred to as HeliCoil Screw Thread Insert (STI) Taps and must be used for HeliCoil repairs. HeliCoil STI Taps are supplied with HeliCoil Thread Repair Kits and may be used with the same tap handles as conventional taps.

Emhart Technologies HeliCoil STI Taps are manufactured in high speed steel to the most rigid specifications. They produce holes for Tolerance Classes 4H5H and 5H for use in the general range of aluminums, magnesiums, mild steels, free machining stainless steels, and other free machining materials.

HeliCoil also has specially designed spark plug taps, also known as Piloted Reamer Taps,
for use in spark plug applications.

HeliCoil Roughing Taps

Straight fluted HeliCoil taps used for difficult tapping operations where it is desirable to
reduce the load on the HeliCoil Finishing Tap.

HeliCoil Finishing Taps

HeliCoil Finishing Taps have 4 thread chamfers and are used in through holes and blind
holes that allow for ample chip clearance. They are easier to start and require less tapping
torque than HeliCoil Bottoming Taps.

HeliCoil Bottoming Taps

HeliCoil Bottoming Taps have 2 thread chamfers and are used in blind holes drilled to a
minimum depth that requires threads to be close to the bottom of the hole.

HeliCoil Spiral Point Taps

HeliCoil Spiral Point Taps incorporate an angular grind at the point end of the tap which
shears chips and drives them forward of the tap. They are used widely in long thru holes
and blind holes with ample chip clearance.
HeliCoil Spiral Point Taps are free cutting and provide increased tap strength. However,
they are not recommended for abrasive materials.

HeliCoil Spiral Flute Taps

HeliCoil Spiral Flute Taps have a 2 thread chamfer as well as spiral flutes and they are
specially designed for efficient removal of stringy chips out of deep or blind holes in
soft materials and effective chip disposal in production tapping operations.

HeliCoil Spark Plug Taps (Piloted Reamer Taps)

HeliCoil Spark Plug Taps have a pilot thread at the front, to pull the tap into the hole,
followed by the reamer section which removes the damaged threads and then by a
larger tap section which cuts the proper threads for the HeliCoil spark plug insert to be
installed. No prior drilling of worn out threads is needed with HeliCoil spark plug taps.

Catalogs contact us for more information on HeliCoil STI Taps or HeliCoil catalogues.

CONTACT US:

HeliCoil Singapore Thor International Company
Contact Person : Mr. HH Tan
Address : 10 Ubi Crescent, #04-46 Ubi Techpark Lobby C, Singapore 408564
Phone no : (65) 67434155
Fax : (65) 67421106
Email : sales@thorintl.com
Web : http://www.helicoil.com.sg, www.helicoil.sg, www.thorintl.com, www.armacoil.com.sg