Order before 5:00 pm Central Time for Same Day Shipping on most In-Stock orders!
We carry a huge selection of Brake Parts!
Shop With Confidence - 30 Day Easy Returns - No Need To Call
Follow us on facebook

Thread Repair Kit - Inch Series

Click for a larger picture of Thread Repair Kit - Inch Series
View Catalog Page in PDF format

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. Perma-Coils are completely interchangeable with Heli-Coil® inserts and tooling. Each kit includes a special tap, an installation tool, and inserts in the quantity indicated.

We also stock extra Perma-Coil Insert Packs (Part No. 3868), Replacement Perma-Coil Installation Tools (Part No. 3866), and Replacement Perma-Coil Taps (Part No. 3867).

Also Available: Metric Perma-Coil Thread Repair Kits (Part No. 3870).

Common applications:
FF1600 (Kent) side engine mount bolts: 5/16-18
FF1600 (Kent) header bolts and intake manifold bolts & stud: 5/16-18
FF1600 (Kent) rocker shaft bolts: 3/8-16
Hewland Mk 9 rear cover studs: 1/4-20
Hewland Mk 9 adapter plate studs: 7/16-14

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

Order Qty
Part No.


Thread Repair Kit - (12 inserts) 10-32

$42.99In Stock


Thread Repair Kit - (12 inserts) 1/4-20

$30.99In Stock


Thread Repair Kit - (12 inserts) 1/4-28

$42.99In Stock


Thread Repair Kit - (12 inserts) 5/16-18

$30.99In Stock


Thread Repair Kit - (12 inserts) 5/16-24

$42.99In Stock


Thread Repair Kit - (12 inserts) 3/8-16

$30.99In Stock


Thread Repair Kit - (12 inserts) 3/8-24

$42.99In Stock


Thread Repair Kit - (6 inserts) 7/16-14

$32.99In Stock


Thread Repair Kit - (6 inserts) 7/16-20

$42.99In Stock


Thread Repair Kit - (6 inserts) 1/2-20

$47.99In Stock


Thread Repair Kit - (6 inserts) 5/8-18

$59.99In Stock


Thread Repair Kit - (4 inserts) 3/4-16

$73.99In Stock
Related Product Groups
Perma-Coil Thread Repair System