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Time-Sert Thread Repair Questions & Technical Support

Need Technical Support for Time Sert, Helicoil or other Thread Repair Systems?




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Not sure what thread repair system will fix your stripped out head bolt, spark plug, rocker arm or other type of damaged threaded hole?

Our expert thread repair technical support is here to help you find the correct thread repair system for your need.


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MONDAY THRU FRIDAY 8 AM - 5 PM EST




Frequently Asked Questions (FAQ)


What is the advantages of using Time Sert thread repair compared to Helicoil?

The Time Sert thread repair system employs a thin wall, self locking, solid bushing insert with positive placement on installation for "accurate specific depths". This ensures that the insert does not wind down into the threaded hole.

Helicoil is a wire spring, doesn't sound very secure right? The Time-Sert is a complete sleeve with threads on the outside to thread into the hole and a stop tab to keep the sleeve from spinning inside the hole.

Time Sert thread repair offers a permanent fix the first time OR when a Helicoil or Keensert fails.

The Time Sert thread repair system employs a thin wall, self locking, solid bushing insert with positive placement on installation for "accurate specific depths". This ensures that the insert does not wind down into the threaded hole.

Click here for Time-Sert thread repair kits and inserts


Is the sizing of the Time-Sert thread repair kit for the internal or external?

The thread repair kits size are the internal size.

Example: If your bolt is M6 x 1.0 and your stripped thread is M6 x 1.0 you will need a M6 x 1.0 thread repair kit.  If your bolt is 3/8 - 16 and your stripped thread is 3/8 - 16 you will need a 3/8 - 16 thread repair kit.


Can Time-Sert thread repair kits be installed in a blind hole?

Yes, the Time-Sert thread repair kits can be installed in blind holes.

A basic dimension we give is .250 inches or 6.3mm deeper hole, than the insert itself. This is the relief angle length of the tap we have to account for to get a full thread. This can vary as small taps will have shorter relief angle length than larger taps. Again this is the length from the tip of the tap to the first "full" thread.

The extra depth also gives us enough room for the install driver to slightly pass thru the bottom of the insert to expand the last few threads, locking it in place. Example. The blind hole depth for a 5/16-18 x .450 should be a minimum of .700 inches or 17.8mm deep. Insert length .450 + relief angle of tap .250 = .700 inches or 17.8mm Hole Depth.

Another thing to keep in mind when repairing a blind hole application is that you "do not" want to bottom out the driver tool on installation. There is a simple method to safeguard against bottoming the tool out, by placing a visual mark the driver tool. BEFORE installing the insert, place the driver tool into the hole and mark the tool at the point it can't enter any further. Use a ink marker or even use a small strip of electrical tape around the driver. This way we know exactly how deep the hole is and there is no danger of bottoming the tool out.


Why can't I use a standard Time-Sert kit for head bolt repair?

Due to the nature of how the head bolts are seated in the head you will need special tooling to make the threads recess in the block.

The special tooling is not included in the standard kits. However, the specific head bolt and universal head bolt kits do include the correct tooling in order to properly install the inserts for head bolts.