HeliCoil Free Running Inserts, HeliCoil Screw Lock Inserts

About HeliCoil Free Running Inserts

These are the standard HeliCoil inserts when installed, provides the hole with smooth free running threads.

In their free state, HeliCoil Free Running Inserts are greater in diameter than the tapped hole into which they are installed. In the assembly operation the torque applied to the tang reduces the diameter of the leading coil and permits it to enter the tapped thread. When the torque or rotation is stopped, the coils expand with a spring-like action anchoring the insert permanently in place against the tapped hole.

No staking, locking, swaging, keying, nor interference fit is required to retain HeliCoil inserts,
thereby eliminating stress concentration in the parent material. The HeliCoil insert automatically adjusts itself, radially and axially, to any expansion or contraction of the parent material.

About HeliCoil Screw Lock Inserts

Emhart Technologies HeliCoil Screw Lock Inserts have all the characteristics of HeliCoil Free
Running Inserts but in addition, they feature a resilient locking mechanism which grips the bolt and prevents it from loosening under vibration or impact.

The locking action is achieved by one or more of the coils of the HeliCoil insert having a series of straight segments, or chords. When the bolt enters this grip coil, these chordal segments flex outward creating pressure on the bolt. This pressure is exerted between the flanks of the bolt thread thus utilising the maximum contact area and minimising the unit pressure.

HeliCoil Screw Lock Inserts permits frequent removal and reassembly of bolts without appreciable loss of torque. They positively secure the screw against loosening caused by vibration and shock and they will not relax their grip on the screw even in tough metals such as cast iron, alloy steel, titanium, etc.

Users enjoy cost savings in space, weight and money, through the elimination of lock wiring, lock nuts, lock washers, chemical compounds, plastic pellets/patches and other locking mechanisms.
HeliCoil Screw Thread Insert Sizes
Emhart Technologies HeliCoil Inserts are available in:

Metric (Coarse & Fine)
Whitworth (BSW, BSF, BSPF, BA)
Unified Thread (UNC & UNF)
Spark Plug
Pipe Thread

HeliCoil wire thread inserts are available in five insert lengths for each thread size - 1, 1.5, 2, 2.5 and 3 times the nominal thread diameter of the screw or bolt.

Catalogs contact us for more information on Helicoil screw thread inserts 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/, http://www.helicoil.sg/, http://www.thorintl.com/, http://www.armacoil.com.sg/