Your Answer To Thread Repair... All In One Kit
Thread repair using CoilThread Inserts is a universally accepted method of repairing stripped threads in all types of metals and other materials. Damaged threads can be brought back to the original thread size and better than new using stainless steel inserts. Thread wear, corrosion, and galling will be virtually eliminated, and the assembly will be stronger than the original with CoilThread Inserts.
Unlike threaded solid bushing type fasteners, CoilThread Inserts provide space and weight savings to your repair process. In addition, CoilThread Inserts eliminate the need for oversized drilling and tapping, and welding or plugging of damaged holes.
Each KATO-Kit Consists Of...
KATO CoilThread Inserts that meet or exceed all applicable military, aerospace, and commercial standards.
One high speed steel STI tap.
One high quality threaded installation tool (mandrel made from steel, not plastic).
KATO-Kits Part Numbers
| Nominal Thread Size |
Complete KATO-KIT Part Number |
Insert Replacement Pack | Inserts per Kit |
Installation
Tool Part Number |
Tap Part Number |
Drill Size |
| UNC - UNIFIED COARSE | ||||||
| 4-40 | CTKK04C | CTKP-04C | 12 | CTKI-04C | CTKT-04C | #31 |
| 5-40 | CTKK-05C | CTKP-05C | 12 | CTKI-05C | CTKT-05C | #29 |
| 6-32 | CTKK-06C | CTKP-06C | 12 | CTKI-06C | CTKT-06C | #25 |
| 8-32 | CTKK-2C | CTKP-2C | 12 | CTKI-2C | CTKT-2C | 11/64 |
| 10-24 | CTKK-3C | CTKP-3C | 12 | CTKI-3C | CTKT-3C | 13/64 |
| 12-24 | CTKK-1C | CTKP-1C | 12 | CTKI-1C | CTKT-1C | 15/64 |
| 1/4-20 | CTKK-4C | CTKP-4C | 12 | CTKI-4C | CTKT-4C | 17/64 |
| 5/16-18 | CTKK-5C | CTKP-5C | 12 | CTKI-5C | CTKT-5C | 21/64 |
| 3/8-16 | CTKK-6C | CTKP-6C | 12 | CTKI-6C | CTKT-6C | 25/64 |
| 7/16-14 | CTKK-7C | CTKP-7C | 12 | CTKI-7C | CTKT-7C | 29/64 |
| 1/2-13 | CTKK-8C | CTKP-8C | 12 | CTKI-8C | CTKT-8C | 17/32 |
| 9/16-12 | CTKK-9C | CTKP-9C | 6 | CTKI-9C | CTKT-9C | 19/32 |
| 5/8-11 | CTKK-10C | CTKP-10C | 6 | CTKI-10C | CTKT-10C | 21/32 |
| 3/4-10 | CTKK-12C | CTKP-12C | 4 | CTKI-12C | CTKT-12 | 25/32 |
| 7/8-9 | CTKK-14C | CTKP-14C | 4 | CTKI-14C | CTKT-14 | 29/32 |
| 1-8 | CTKK-16C | CTKP-16C | 4 | CTKI-16C | CTKT-16C | 1-1/32 |
| UNF - UNIFIED FINE | ||||||
| 6-40 | CTKK-06F | CTKP-06F | 12 | CTKI-06F | CTKT-06F | #25 |
| 8-36 | CTKK-2F | CTKP-2F | 12 | CTKI-2F | CTKT-2F | #17 |
| 10-32 | CTKK-3F | CTKP-3F | 12 | CTKI-3F | CTKT-3F | 13/64 |
| 1/4-28 | CTKK-4F | CTKP-4F | 12 | CTKI-4F | CTKT-4F | 17/64 |
| 5/16-24 | CTKK-5F | CTKP-5F | 12 | CTKI-5F | CTKT-5F | 21/64 |
| 3/8-24 | CTKK-6F | CTKP-6F | 12 | CTKI-6F | CTKT-6F | 25/64 |
| 7/16-20 | CTKK-7F | CTKP-7F | 12 | CTKI-7F | CTKT-7F | 29/64 |
| 1/2-20 | CTKK-8F | CTKP-8F | 12 | CTKI-8F | CTKT-8F | 33/64 |
| 9/16-18 | CTKK-9F | CTKP-9F | 6 | CTKI-9F | CTKT-9F | 37/64 |
| 5/8-18 | CTKK-10F | CTKP-10F | 6 | CTKI-10F | CTKT-10F | 41/64 |
| 3/4-16 | CTKK-12F | CTKP-12F | 4 | CTKI-12F | CTKT-12F | 49/64 |
| 7/8-14 | CTKK-14F | CTKP-14F | 4 | CTKI-14F | CTKT-14F | 57/64 |
| 1-14 | CTKK-16F | CTKP-16F | 4 | CTKI-16F | CTKT-16F | 1-1/64 |
| 1-12 | CTKK-161F | CTKP-161F | 4 | CTKI-161F | CTKT-161F | 1-1/64 |
| METRIC COARSE | ||||||
| M3X0.5 | CTKK-M3 | CTKP-M3 | 12 | CTKI-M3 | CTKT-M3 | 1/8 |
| M3.5X0.6 | CTKK-M3.5 | CTKP-M3.5 | 12 | CTKI-M3.5 | CTKT-M3.5 | #27 |
| M4X0.7 | CTKK-M4 | CTKP-M4 | 12 | CTKI-M4 | CTKT-M4 | 11/34 |
| M5X0.8 | CTKK-M5 | CTKP-M5 | 12 | CTKI-M5 | CTKT-M5 | 13/64 |
| M6X1 | CTKK-M6 | CTKP-M6 | 12 | CTKI-M6 | CTKT-M6 | 1/4 |
| M7X1 | CTKK-M7 | CTKP-M7 | 12 | CTKI-M7 | CTKT-M7 | 9/32 |
| M8X1.25 | CTKK-M8X1.25 | CTKP-M8X1.25 | 12 | CTKI-M8X1.25 | CTKT-M8X1.25 | 21/64 |
| M10X1.5 | CTKK-M10X1.5 | CTKP-M10X1.5 | 12 | CTKI-M10X1.5 | CTKT-M10X1.5 | 13/32 |
| M12X1.75 | CTKK-M12X1.75 | CTKP-M12X1.75 | 12 | CTKI-M12X1.75 | CTKT-M12X1.75 | 31/64 |
| M14X2 | CTKK-M14X2 | CTKP-M14X2 | 12 | CTKI-M14X2 | CTKT-M14X2 | 37/64 |
| M16X2 | CTKK-M16X2 | CTKP-M16X2 | 6 | CTKI-M16X2 | CTKT-M16X2 | 21/32 |
| M18X2.5 | CTKK-M18X2.5 | CTKP-M18X2.5 | 6 | CTKI-M18X2.5 | CTKT-M18X2.5 | 47/64 |
| M20X2.5 | CTKK-M20X2.5 | CTKP-M20X2.5 | 4 | CTKI-M20X2.5 | CTKT-M20X2.5 | 13/16 |
| METRIC FINE | ||||||
| M8X1 | CTKK-M8X1 | CTKP-M8X1 | 12 | CTKI-M8X1 | CTKT-M8X1 | 21/64 |
| M10X1 | CTKK-M10X1 | CTKP-M10X1 | 12 | CTKI-M10X1 | CTKT-M10X1 | 13/32 |
| M10X1.25 | CTKK-M10X1.25 | CTKP-M10X1.25 | 12 | CTKI-M10X1.25 | CTKT-M10X1.25 | 13/32 |
| M12X1.25 | CTKK-M12X1.25 | CTKP-M12X1.25 | 12 | CTKI-M12X1.25 | CTKT-M12X1.25 | 31/64 |
| M12X1.5 | CTKK-M12X1.5 | CTKP-M12X1.5 | 12 | CTKI-M12X1.5 | CTKT-M12X1.5 | 31/64 |
| M14X1.5 | CTKK-M14X1.5 | CTKP-M14X1.5 | 12 | CTKI-M14X1.5 | CTKT-M14X1.5 | 9/16 |
| M16X1.5 | CTKK-M16X1.5 | CTKP-M16X1.5 | 6 | CTKI-M16X1.5 | CTKT-M16X1.5 | 21/32 |
| M18X1.5 | CTKK-M18X1.5 | CTKP-M18X1.5 | 6 | CTKI-M18X1.5 | CTKT-M18X1.5 | 47/64 |