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.

However, key inserts provide an alternative to helicoils and they have their own set of inherent benefits and flaws. Key inserts became popular because of the ability to quickly repair stripped or damaged threads without having to discard the original part.

Before starting, you will need to determine the size of the Helicoil you need for your application. Use the screw or bolt to identify the: Diameter: Using a Caliper, measure the diameter of the bolt. Pitch: Using a Pitch Gauge, measure the pitch of the bolt or screw to determine what pitch size is needed.

When properly installed, helical inserts create a permanent bond that is stronger than the original bolt fastening. Helical inserts provide a convenient way to repair stripped threads in soft or light materials, such as magnesium, wood, aluminum, plastic, and zinc die castings.

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.

But Helicoils are cheap to install and work well. If they are inserted correctly and the plugs are not allowed to corrode in-place they should last a lifetime. A properly installed helicoil (a real Helicoil, not some knock-off) will restore threads to a like-new condition.

The tang is a small segment of the end of the insert that extends into the middle of the coil. With tanged inserts, the tool uses the tang to grip the coil and screw it into place. Once the helicoil is installed, the tang is broken off and removed.

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

Strength: A key-locking insert is much stronger than a helical insert, particularly in high temperature and high torque environments. Ease of Install: A key-locking insert is easier to install than a helical wire insert. Price: A wire insert is much less expensive than a key-locking insert.

The short answer is no. STI tap dimensions are designed specifically for use with E_Z Coil™ inserts.

How deep should a helicoil go? ›

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.

Any threaded insert longer than the diameter of the bolt becomes overkill. 2X the diameter is considered the max needed for any application. Having a 40mm long thread for a 14 mm bolt is pointless, so no such insert is made. HeliCoils come in lengths as a function of the diameter of the thread (D).

The Time Sert, which was used to install the bolt on the right, is said to be a more durable tool than the Heli-Coil.

A HeliCoil, otherwise known as a screw thread insert or helical insert, is a registered trademark of STANLEY Engineered Fastening. It has a stainless steel wire that has a diamond-shaped cross-section and repairs stripped thread in hard metals such as steel or soft materials such as wood or plastic.

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.

Removing helicoils is a very difficult task, but it can be done with a helicoil extraction tool. This tool has a sharp blade that must be inserted at the top of the helicoil, and while being held in position strike the back of the tool with a hammer.

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.

In summary, while locking helicoils are generally not intended to be reused, there are some situations where they may be able to be removed and replaced. However, it is important to exercise caution when removing locking helicoils to avoid damaging the surrounding threads or material.

HeliCoils create stronger bonds than the original fastener because they are coiled wire inserts that are wider than the tapped hole. When you insert them into the hole, and as you screw the bolt down, the coil tightens and creates a seal.