Helicoil Harbor Freight (2024)

FAQs

Is a Heli-Coil a permanent fix? ›

Heli-Coil^® Kits - Thread Repair Kits & Master Sets

Restore stripped threads easily and permanently with Heli-Coil thread repair kits and master sets. Heli-Coil application-specific thread repair kits make complex repairs manageable and are often the recommended solution by both domestic and foreign automakers.

The coils are wider than the tapped hole. They are inserted into the hole, and as the bolt is screwed down, the coil expands, creating a tight, firm seal against the threads. When properly installed, helical inserts create a permanent bond that is stronger than the original bolt fastening.

Key inserts are ideal for when a high degree of pull-out strength is required or for when a screw will be moving in and out repeatedly. Unlike helicoils, key inserts do not require a special installation tool and there is no tang to remove.

Can You Use LOCTITE^® 262™ Threadlocker? In short, the answer is yes.

Consequently the insert then begins to wind out as the thread is undone. Another disadvantage of helical coil type inserts is that they are sometimes harder to fit than a solid bush. This applies especially In deep or inaccessible holes.

Removing helicoils is a very difficult task, but it can be done with a helicoil extraction tool.

If they are inserted correctly and the plugs are not allowed to corrode in-place they should last a lifetime. If properly installed a thread insert is a permanent repair.

Insert installation depth is dependent on the presence of a countersink (3/4 to 1-1/2 turns below the surface with a countersink and 1/4 to 1/2 turns below the surface without a countersink). Tangless CoilThread Insert installation is now complete.

The coils of the insert are compressed during installation as the insert is threaded into the housing. Like a coiled spring, the compressed windings of the installed insert attempt to expand against the walls of the threaded housing.

Once you have selected the correct drill bit size, simply drill the hole. In our case it is a pass-through hole, so we will drill until we see the drill bit come through. For other types of holes, you will need to determine the depth of the hole and ensure you don't go too deep.

When to use helicoils in aluminum? ›

Use HELICOIL® wherever low shear strength materials – such as aluminium or aluminium-magnesium alloys – are used. In these applications HELICOIL® thread inserts generate heat-resistant, wear-resistant and high-strength thread of the highest precision. No internal thread wear, even with frequent use.

You can "stack" heli-coil inserts. The threads you create in the hole it will be screwed into means the coils will line up in the threads, so the threads will all be in line, and the bolt will follow them.

Do I need special tools to install helicoils? Yes, the tap and installation tool must be precise for the helicoil you're using.

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.

helicoil® thread inserts are made of austenitic chrome- nickel steel (minimum tensile strength of 1,400 n/mm2). The rolled thread has a high surface quality. This ensures a high-strength, wear-resistant thread with reduced friction torque.

The coils of the insert are compressed during installation as the insert is threaded into the housing. Like a coiled spring, the compressed windings of the installed insert attempt to expand against the walls of the threaded housing.

If it's a normal shop, I've seen prices of $10 to $50 per hole, depending on circimstances. If several of the same size are installed, the price sometimes goes down.