Our Location
304 North Cardinal St.
Dorchester Center, MA 02124
Thread Kit Products
KATO Thread Kits offers a complete line of thread repair products designed to restore damaged threads, strengthen new threads, and extend the service life of threaded assemblies. Whether you’re performing automotive repairs, industrial maintenance, manufacturing, or equipment rebuilding, our products provide reliable solutions for a wide range of fastening applications.
Our product lineup includes Perma-Coil® thread repair kits, Perma-Plug®, Perma-Kee®, Big-Sert®, Time-Sert®, installation tools, replacement inserts, taps, drills, and accessories. Each product is engineered to help technicians perform fast, dependable thread repairs while reducing downtime and replacement costs.
In addition to thread repair solutions, we also offer specialized fastening products such as Perma-Rivet® blind rivet systems for creating strong, permanent fastening points in thin materials, and KATO LockOne® that help prevent bolt from loosening due to vibration while still allowing easy removal and reinstallation.
Browse our complete selection below to find the right thread repair solution for your project.
Perma-Coil®
Repair stripped or damaged threads with high-quality stainless steel inserts designed for automotive, industrial, and general maintenance applications.
Perma-Plug®
Restore damaged spark plug threads without replacing expensive cylinder heads.
Perma-Rivet®
Blind rivet tools and fasteners designed to create strong, permanent connections in metal, plastic, and other thin materials.
Perma-Kee®
Repair key locking threaded inserts for high-strength applications requiring maximum pull-out resistance.
Time-Sert®
Solid bushing inserts designed for permanent thread repair in aluminum, cast iron, and steel.
Big-Sert®
Repair oversized or severely damaged threads with heavy-duty thread repair inserts.
KATO Pro-Kits®
Professional thread repair kits featuring KATO Tangless® inserts for fast, reliable repairs in automotive, industrial, and maintenance applications.
KATO LockOne®
Restore damaged spark plug threads without replacing expensive cylinder heads.
Frequently Asked Questions (FAQs)
A thread repair kit includes the tools and inserts needed to restore damaged or stripped threads. Most kits contain thread inserts, a drill, tap, installation tool, and instructions for completing the repair.
Yes. Many KATO Thread Kits products offer replacement thread inserts, installation tools, taps, and accessories so you can replenish your kit without purchasing a complete replacement.
Yes. Thread repair kits are commonly used to restore damaged aluminum threads found in engine blocks, cylinder heads, machinery, and equipment while creating stronger, longer-lasting threads.
The best kit depends on your application. Perma-Coil® kits are ideal for general thread repair, while Perma-Plug® kits are designed for spark plug repairs. Heavy-duty repairs may require Big-Sert® or Time-Sert® kits.
Our cancellation policy allows you to cancel your subscription at any time through your account settings. Regarding refunds, our policy is we offer a 30-day money-back guarantee. Please refer to our Terms of Service Page for complete details.
Our standard hours of operation are Monday to Friday, 9:00 AM to 5:00 PM in Pacific Standard Time (PST).