Perma-Kee
KATO Perma-Kee® inserts are solid, one piece, kee-locking inserts used to repair stripped or damaged threads in all types of metals and applications. When installed, locking-kees are driven into the surrounding parent material, locking the insert into place and keeping it from rotating due to vibration or torsion. No special taps are needed.
Perma-Kee inserts are available in carbon or stainless steel, both inch and metric series, and a variety of wall thickness – thinwall, heavy duty, extra heavy duty and solid styles.
Perma-Kee inserts are sold in bulk quantities. Installation tools sold separately.
THINWALL INSERTS
| Thread Size | External Thread Size (Tap Size) |
TK Part No. | Drill Size | Tool | |
|---|---|---|---|---|---|
| Carbon Steel | Stainless Steel1 | ||||
| Unified Sizes | |||||
| 10-24 | 5/16-18 | PKTC-3 | PKTC-3S | I | PKT-3T |
| 10-32 | 5/16-18 | PKTF-3 | PKTF-3S | I | PKT-3T |
| 1/4-20 | 3/8-16 | PKTC-4 | PKTC-4S | Q | PKT-4T |
| 1/4-28 | 3/8-16 | PKTF-4 | PKTF-4S | Q | PKT-4T |
| 5/16-18 | 7/16-14 | PKTC-5 | PKTC-5S | X | PKT-5T |
| 5/16-24 | 7/16-14 | PKTF-5 | PKTF-5S | X | PKT-5T |
| 3/8-16 | 1/2-13 | PKTC-6 | PKTC-6S | 29/64 | PKT-6T |
| 3/8-24 | 1/2-13 | PKTF-6 | PKTF-6S | 29/64 | PKT-6T |
| 7/16-14 | 9/16-12 | PKTC-7 | PKTC-7S | 33/64 | PKT-7T |
| 7/16-20 | 9/16-12 | PKTF-7 | PKTF-7S | 33/64 | PKT-7T |
| 1/2-13 | 5/8-11 | PKTC-8 | PKTC-8S | 37/64 | PKT-8T |
| 1/2-20 | 5/8-11 | PKTF-8 | PKTF-8S | 37/64 | PKT-8T |
| Metric Sizes | |||||
| M5x.8 | M8X1.25 | PKTM-5X.8 | PKTM-5X.8S | 6.9 | PKTM-5T |
| M6x1 | M10X1.25 | PKTM-6X1 | PKTM-6X1S | 8.8 | PKTM-6T |
| M8x1 | M12X1.25 | PKTM-8X1 | PKTM-8X1S | 10.8 | PKTM-8T |
| M8x1.25 | M12X1.25 | PKTM-8X1.25 | PKTM-8X1.25S | 10.8 | PKTM-8T |
| M10x1.25 | M14X1.5 | PKTM-10X1.25 | PKTM-10X1.25S | 12.8 | PKTM-10T |
| M10x1.5 | M14X1.5 | PKTM-10X1.5 | PKTM-10X1.5S | 12.8 | PKTM-10T |
| M12x1.25 | M16X1.5 | PKTM-12X1.25 | PKTM-12X1.25S | 14.75 | PKTM-12T |
| M12x1.75 | M16X1.5 | PKTM-12X1.75 | PKTM-12X1.75S | 14.75 | PKTM-12T |
- Stainless Steel Perma-Kee may have longer lead times.
THINWALL KITS
| Internal Thread |
External Thread |
Kits Part No. | Inserts per Kit |
|
|---|---|---|---|---|
| Unified Sizes | ||||
| 10-24 | 5/16-18 | PKTC-3K | 4 | |
| 10-32 | 5/16-18 | PKTF-3K | 4 | |
| 1/4-20 | 3/8-16 | PKTC-4K | 4 | |
| 1/4-28 | 3/8-16 | PKTF-4K | 4 | |
| 5/16-18 | 7/16-14 | PKTC-5K | 4 | |
| 5/16-24 | 7/16-14 | PKTF-5K | 4 | |
| 3/8-16 | 1/2-13 | PKTC-6K | 3 | |
| 3/8-24 | 1/2-13 | PKTF-6K | 3 | |
| 7/16-14 | 9/16-12 | PKTC-7K | 3 | |
| 7/16-20 | 9/16-12 | PKTF-7K | 3 | |
| 1/2-13 | 5/8-11 | PKTC-8K | 3 | |
| 1/2-20 | 5/8-11 | PKTF-8K | 3 | |
| Metric Sizes | ||||
| M5x.8 | M8X1.25 | PKTM-5X.8K | 4 | |
| M6x1 | M10X1.25 | PKTM-6X1K | 4 | |
| M8x1 | M12X1.25 | PKTM-8X1K | 4 | |
| M8x1.25 | M12X1.25 | PKTM-8X1.25K | 4 | |
| M10x1.25 | M14X1.5 | PKTM-10X1.25K | 3 | |
| M10x1.5 | M14X1.5 | PKTM-10X1.5K | 3 | |
| M12x1.25 | M16X1.5 | PKTM-12X1.25K | 3 | |
| M12x1.75 | M16X1.5 | PKTM-12X1.75K | 3 | |
HEAVY DUTY INSERTS
| Thread Size | External Thread Size (Tap Size) |
TK Part No. | Drill Size | Tool | |
|---|---|---|---|---|---|
| Carbon Steel | Stainless Steel1 | ||||
| Unified Sizes | |||||
| 8-32 | 5/16-18 | PKHC-2 | PKHC-2S | I | PKH-2T |
| 10-24 | 3/8-16 | PKHC-3 | PKHC-3S | Q | PKH-3T |
| 10-32 | 3/8-16 | PKHF-3 | PKHF-3S | Q | PKH-3T |
| 1/4-20 | 7/16-14 | PKHC-4 | PKHC-4S | X | PKH-4T |
| 1/4-28 | 7/16-14 | PKHF-4 | PKHF-4S | X | PKH-4T |
| 5/16-18 | 1/2-13 | PKHC-5 | PKHC-5S | 29/64 | PKH-5T |
| 5/16-24 | 1/2-13 | PKHF-5 | PKHF-5S | 29/64 | PKH-5T |
| 3/8-16 | 9/16-12 | PKHC-6 | PKHC-6S | 33/64 | PKH-6T |
| 3/8-24 | 9/16-12 | PKHF-6 | PKHF-6S | 33/64 | PKH-6T |
| 7/16-14 | 5/8-11 | PKHC-7 | PKHC-7S | 37/64 | PKH-7T |
| 7/16-20 | 5/8-11 | PKHF-7 | PKHF-7S | 37/64 | PKH-7T |
| 1/2-13 | 3/4-16 | PKHC-8 | PKHC-8S | 45/64 | PKH-8T |
| 1/2-20 | 3/4-16 | PKHF-8 | PKHF-8S | 45/64 | PKH-8T |
| 9/16-12 | 3/4-16 | PKHC-9 | PKHC-9S | 45/64 | PKH-9T |
| 9/16-18 | 3/4-16 | PKHF-9 | PKHF-9S | 45/64 | PKH-9T |
| 5/8-11 | 7/8-14 | PKHC-10 | PKHC-10S | 53/64 | PKH-10T |
| 5/8-18 | 7/8-14 | PKHF-10 | PKHF-10S | 53/64 | PKH-10T |
| 3/4-10 | 1 1/8-12 | PKHC-12 | PKHC-12S | 1 1/16 | PKH-12T |
| 3/4-16 | 1 1/8-12 | PKHF-12 | PKHF-12S | 1 1/16 | PKH-12T |
| 7/8-9 | 1 1/4-12 | PKHC-14 | PKHC-14S | 1 3/16 | PKH-14T |
| 7/8-14 | 1 1/4-12 | PKHF-14 | PKHF-14S | 1 3/16 | PKH-14T |
| 1-8 | 1 3/8-12 | PKHC-16 | PKHC-16S | 1 5/16 | PKH-16T |
| 1-12 | 1 3/8-12 | PKHF-16 | PKHF-16S | 1 5/16 | PKH-16T |
| Metric Sizes | |||||
| M4X0.7 | M8X1.25 | PKHM-4X.7 | PKHM-4X.7S | 6.90 | PKHM-4T |
| M5X0.8 | M10X1.25 | PKHM-5X.8 | PKHM-5X.8S | 8.80 | PKHM-5T |
| M6X1 | M12X1.25 | PKHM-6X1 | PKHM-6X1S | 10.80 | PKHM-6T |
| M8X1 | M14X1.5 | PKHM-8X1 | PKHM-8X1S | 12.80 | PKHM-8T |
| M8X1.25 | M14X1.5 | PKHM-8X1.25 | PKHM-8X1.25S | 12.80 | PKHM-8T |
| M10X1.25 | M16X1.5 | PKHM-10X1.25 | PKHM-10X1.25S | 14.75 | PKHM-10T |
| M10X1.5 | M16X1.5 | PKHM-10X1.5 | PKHM-10X1.5S | 14.75 | PKHM-10T |
| M12X1.25 | M18X1.5 | PKHM-12X1.25 | PKHM-12X1.25S | 16.75 | PKHM-12T |
| M12X1.75 | M18X1.5 | PKHM-12X1.75 | PKHM-12X1.75S | 16.75 | PKHM-12T |
| M14X1.5 | M20X1.5 | PKHM-14X1.5 | PKHM-14X1.5S | 18.75 | PKHM-14T |
| M14X2 | M20X1.5 | PKHM-14X2 | PKHM-14X2S | 18.75 | PKHM-14T |
| M16X1.5 | M22X1.5 | PKHM-16X1.5 | PKHM-16X1.5S | 20.50 | PKHM-16T |
| M16X2 | M22X1.5 | PKHM-16X2 | PKHM-16X2S | 20.50 | PKHM-16T |
| M18X1.5 | M24X1.5 | PKHM-18X1.5 | PKHM-18X1.5S | 22.50 | PKHM-18T |
| M20X1.5 | M30X2 | PKHM-20X1.5 | PKHM-20X1.5S | 28.00 | PKHM-20T |
| M20X2.5 | M30X2 | PKHM-20X2.5 | PKHM-20X2.5S | 28.00 | PKHM-20T |
| M22X1.5 | M32X2 | PKHM-22X1.5 | PKHM-22X1.5S | 30.00 | PKHM-22T |
| M24X2 | M33X2 | PKHM-24X2 | PKHM-24X2S | 31.00 | PKHM-24T |
| M24X3 | M33X2 | PKHM-24X3 | PKHM-24X3S | 31.00 | PKHM-24T |
- Stainless Steel Perma-Kee may have longer lead times.
HEAVY DUTY KITS
| Internal Thread |
External Thread |
Kits Part No. |
Inserts per Kits |
|
|---|---|---|---|---|
| Unified Sizes | ||||
| 10-24 | 3/8-16 | PKHC-3K | 4 | |
| 10-32 | 3/8-16 | PKHF-3K | 4 | |
| 1/4-20 | 7/16-14 | PKHC-4K | 4 | |
| 1/4-28 | 7/16-14 | PKHF-4K | 4 | |
| 5/16-18 | 1/2-13 | PKHC-5K | 4 | |
| 5/16-24 | 1/2-13 | PKHF-5K | 4 | |
| 3/8-16 | 9/16-12 | PKHC-6K | 3 | |
| 3/8-24 | 9/16-12 | PKHF-6K | 3 | |
| 7/16-14 | 5/8-11 | PKHC-7K | 3 | |
| 7/16-20 | 5/8-11 | PKHF-7K | 3 | |
| 1/2-13 | 3/4-16 | PKHC-8K | 3 | |
| 1/2-20 | 3/4-16 | PKHF-8K | 3 | |
| 9/16-12 | 3/4-16 | PKHC-9K | 3 | |
| 9/16-18 | 3/4-16 | PKHF-9K | 3 | |
| 5/8-11 | 7/8-14 | PKHC-10K | 2 | |
| 5/8-18 | 7/8-14 | PKHF-10K | 2 | |
| Metric Sizes | ||||
| M5X0.8 | M10X1.25 | PKHM-5X.8K | 4 | |
| M6X1 | M12X1.25 | PKHM-6X1K | 4 | |
| M8X1 | M14X1.5 | PKHM-8X1K | 4 | |
| M8X1.25 | M14X1.5 | PKHM-8X1.25K | 4 | |
| M10X1.25 | M16X1.5 | PKHM-10X1.25K | 3 | |
| M10X1.5 | M16X1.5 | PKHM-10X1.5K | 3 | |
| M12X1.25 | M18X1.5 | PKHM-12X1.25K | 3 | |
| M12X1.75 | M18X1.5 | PKHM-12X1.75K | 3 | |