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Thread Repair Kit - Metric Series

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Brand: Perma-Coil

Perma-Coil Thread Repair Kits are the ideal way to repair stripped or damaged threads. Simply drill out the damaged threads, tap the new hole with the special tap provided in the kit, and insert the stainless steel coil using the installation tool provided. The resulting repair is actually stronger than the original threads!

Install Perma-Coil inserts in new castings to prevent problems before they start. Each kit includes a special tap, an installation tool, and inserts in the quantity indicated. (Note the 14x1.25 kit does not include any inserts.)

We also stock extra Perma-Coil Metric Insert Packs (Part No. 3873), Replacement Metric Perma-Coil Installation Tools (Part No. 3871), and Replacement Metric Perma-Coil Taps (Part No. 3872).

Also Available: Perma-Coil Thread Repair Kits in Inch Sizes (Part No. 3865).

A few common applications:
Formula Ford spark plug threads: 14x1.25
Hewland Mk 9 side cover and rear cover studs: 8x1.25mm
Hewland LD200 rear cover studs: 6x1.0
Hewland LD200 side cover studs, side studs, and bearing carrier studs: 8x1.25
Hewland LD200 front studs: 10x1.5
Oxygen sensor: 18x1.5

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty
Part No.


Thread Repair Kit - (12 inserts) 6x1.0

$39.99In Stock


Thread Repair Kit - (6 inserts) 8x1.0

$56.99In Stock


Thread Repair Kit - (12 inserts) 8x1.25

$36.99In Stock


Thread Repair Kit (6 inserts) - 10x1.0

$54.99In Stock


Thread Repair Kit (12 inserts) - 10x1.25

$56.99In Stock


Thread Repair Kit (12 inserts) - 10x1.5

$41.99In Stock


Thread Repair Kit (6 inserts) - 12x1.25

$69.99In Stock


Thread Repair Kit (6 inserts) - 12x1.5

$71.99In Stock


Thread Repair Kit (6 inserts) - 12x1.75

$47.99In Stock


Thread Repair Kit - 14x1.25 (Tap and Tool Only. No Inserts)

$79.99In Stock


Thread Repair Kit (6 inserts) - 14x1.5

$84.99In Stock


Thread Repair Kit (6 inserts) - 14x2.0

$65.99In Stock


Thread Repair Kit (6 inserts) - 16x2.0

$89.99In Stock


Thread Repair Kit (6 inserts) - 18x1.5

$94.99In Stock
Related Product Groups
Perma-Coil Thread Repair System


by PowerReviews
Thread Repair Kit - Metric Series

(based on 1 review)

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Reviewed by 1 customer

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Worked like a charm

By Brad

from Seattle

Verified Buyer

Comments about Thread Repair Kit - Metric Series:

I would recommend this to anyone needing to repair threads. I used it to repair stripped threads in my Mk9 Hewland side cover.

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