Tips and tricks

Is helicoil stronger than original threads?

Is helicoil stronger than original threads?

However, there are some uses for thin walled thread inserts where we would not recommend helicoil type inserts but Time-Serts. If a thread is “static” i.e. not likely to be done up and undone more than a few times in its lifetime, we would always say a helicoil type thread is the strongest option.

What torque can helicoil take?

Thread Size Max Locking Torque Min. Locking Torque 15th Cycle
5/8(.6250)-18 300 lb-in 32.0 lb-in
3/4(.7500)-16 400 lb-in 50.0 lb-in
7/8(.8750)-14 600 lb-in 70.0 lb-in
1(1.000)-14* 800 lb-in 92.0 lb-in

Do you put Loctite on helicoils?

Apply LOCTITE® 2620™ Threadlocker into the helicoil You might be familiar with LOCTITE® 2620™ as a red, high-strength threadlocker. In this case, the job involved attaching the helicoil to the insert tool provided and then applying LOCTITE® 2620™ to the outside of the helicoil.

What keeps a helicoil in place?

HeliCoils do not require thread sealants or thread locker in order retain the insert, but if you feel the need to use sealant or thread locker, a light coating may be applied to the outer threads, making sure the inner threads are clean. Once installed, HeliCoil inserts are very reliable and trustworthy.

Should you use Loctite with HeliCoils?

Apply LOCTITE® 2620™ Threadlocker into the helicoil 2620™ was selected because it is a high-strength threadlocker that can handle the high temperatures the headers will face.

What keeps a HeliCoil in place?

What is Max locking torque?

So, the maximum locking (prevailing) torque going into the bolt is measured, as is the minimum torque required to remove the bolt. Semantically speaking, the torque value table measures the maximum torque for installation, and the minimum torque for removal.

How much pressure can a helicoil take?

HELI-COIL® Pipe Thread Inserts are precision formed screw thread coils of 18-8 Stainless Steel wire cold rolled into a sharp crescent diamond shaped cross section having a tensile strength in excess of 200,000 psi and a smooth surface of 8 to 16 micro inches.

Do you use Loctite on HeliCoils?

Do HeliCoils use standard taps?

Heli-Coil STI (Screw Thread Insert) taps are used for general and machine operations. The standard STI tap can be used as a basic tool to create threads ideal for threaded inserts.

Why are some HeliCoils red?

The red dye is a simple way to visually distinguish locking inserts from free-running (non-locking) inserts. The red dye does not provide a barrier against galling. The red dye does not protect against galvanic corrosion.

Should I use Loctite on helicoils?

How do helicoils fail?

The point of failure is typically as the bolt passes through the helicoils locking feature. This problem is not limited to any one supplier, thread size, bolt type etc…

What’s better time SERT or helicoil?

After doing a bit of research it sure seems to me that the Time-Sert is the clear choice for a more full-proof ‘permanent” fix. The only advantage to a Helicoil I found, is that it is cheaper. Being in the industry for a little while I have seen time and time again, that cheaper is never better.

Do you use Loctite on helicoils?

How do helicoils stay in place?

The HeliCoil insert itself has special threads designed to grab the walls of the part, and the tang is there to help drive the insert into place. Free running inserts are fully rounded inserts that are slightly larger than the hole they install in.

What size tap do I use for a HeliCoil?

Heli-Coil High Speed Steel Drills are supplied in Master Thread Repair Sets (inch and metric) and all Thread Repair Kits except Spark Plug. All drills fit 1/2 inch chucks. The taps supplied with kits and sets are referred to as STI or Screw Thread Insert taps. These taps must be used for Heli-Coil repairs.

Should I use Loctite on HeliCoils?

Are HeliCoils reliable?

The precision and reliability of the HELICOIL® wire thread inserts have been well proven by the demands of the aerospace and defence industries over the decades and are used extensively in some of the world’s most popular and modern airliners.

Do you put Loctite on HeliCoils?

What is the strongest thread insert?

Wire thread inserts
Wire thread inserts are the strongest type of threaded connection. For this reason threads in critical applic-ations such as inside aircraft turbines and nuclear reactors are fitted with wire thread inserts from new.

Do helicoils use standard taps?

What size hole do you drill for a M8 helicoil?


Insert Size Drill Size Screw Thread Insert Length
M8 x 1.25 8.30 12.00
M9 x 1.25 9.30 13.50
M10 x 1.0 10.30 15.00