KATO Perma-Coil Kits

KATO Perma-Coil® Kits

Maintenance. Repair. Overhaul.

KATO Perma-Coil Kits (Screw Thread Inserts for Maintenance, Repair and Overhaul) are universally accepted method of repairing stripped threads in all types of materials. By using KATO Perma-Coil Kits, damaged threads can be brought back to the original thread size, and better than new. 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 (tanged) Inserts provide space and weight saving to your repair process. In addition, CoilThread (tanged) inserts eliminate the need for oversized drilling and tapping, and welding or plugging of damaged holes. At KATO, there is only one standard of quality for original equipment or repair inserts. All CoilThread inserts meet or exceed all applicable military, aerospace and commercial standards!

See the KATO Perma-Kits in action! Please visit our Video Workshop in Katopedia.

KATO Perma-Coil Kits Coarse

Proudly made in the USA

Each Perma-Coil Kit consists of:

  • Aerospace quality Free-Running CoilThread Tanged inserts; in the most popular length (1.5 Dia. Nominal Length).
  • CoilThread Tap (STI).
  • All steel threaded installation mandrel.
  • Complete and fool-proof Instructions.

Plug Style Tap

Kits with CoilThread STI Taps

All Perma-Coil Kits come with a plug style tap which is used to cut the threads required to install the insert.

CoilThread Inserts

Kits with CoilThread Inserts

Up to 12 CoilThread Tanged inserts can come with the kit. Larger sizes may have fewer than 12 inserts.

Installation Tool

Kits with Mandrel Assembly

An installation mandrel is required to properly install coarse thread inserts. A prewinder body is required for fine and metric thread sizes.

Part Numbers


Thread
Size
KATO
Perma-Coil Kits
Replacement Parts
Pack of Inserts Installation Tool Tap
Unified Coarse
4-401208-014208-014(12/PKG)1172-0141428-014
5-401208-015208-015(12/PKG)1172-0151428-015
6-321208-016208-016(12/PKG)1182-0161428-016
8-321208-018208-018(12/PKG)1182-0181428-018
10-241208-101208-101(12/PKG)1182-1011428-101
12-241208-102208-102(12/PKG)1182-1021428-102
1/4-201208-104208-104(12/PKG)1182-1041428-104
5/16-181208-105208-105(12/PKG)1182-1051428-105
3/8-161208-106208-106(12/PKG)1182-1061428-106
7/16-141208-107208-107(6/PKG)1182-1071428-107
1/2-131208-108208-108(6/PKG)1182-1081428-108
9/16-121208-109208-109(6/PKG)1182-1091428-109
5/8-111208-110208-110(6/PKG)1182-1101428-110
3/4-101208-112208-112(4/PKG)1182-1121428-112
7/8-93208-C14108-114(1/PKG)1182-1141043-14C93
1-83208-C16108-116(1/PKG)1182-1161043-16C93
11/8-73208-C18108-118(1/PKG)1182-1181043-18C93
11/4-73208-C20108-120(1/PKG)1182-1201043-20C93
13/8-63208-C22108-122(1/PKG)1182-1221043-22C93
11/2-63208-C24108-124(1/PKG)1182-1241043-24C93
Unified Fine
10-321208-201208-201(12/PKG)1172-2011428-201
1/4-281208-204208-204(12/PKG)1172-2041428-204
5/16-241208-205208-205(12/PKG)1172-2051428-205
3/8-241208-206208-206(12/PKG)1172-2061428-206
7/16-201208-207208-207(6/PKG)1172-2071428-207
1/2-201208-208208-208(6/PKG)1172-2081428-208
9/16-181208-209208-209(6/PKG)1172-2091428-209
5/8-181208-210208-210(6/PKG)1172-2101428-210
3/4-161208-212208-212(4/PKG)1172-2121428-212
7/8-143208-F14108-214(1/PKG)1039-14F1043-14FP3
1-143208-F164108-2164(1/PKG)1039-164F1043-164FP3
1-123208-F16108-216(1/PKG)1039-16F1043-16FP3
11/8-123208-F18108-218(1/PKG)1039-18F1043-18FP3
11/4-123208-F20108-220(1/PKG)1039-20F1043-20FP3
13/8-123208-F22208-222(1/PKG)1039-22F1043-22FP3
11/2-123208-F24108-224(1/PKG)1039-24F1043-24FP3
Metric Coarse
M3X0.51221-303206-303(12/PKG)1287-3031448-303
M4X0.71221-304206-304(12/PKG)1287-3041448-304
M5X0.81221-305206-305(12/PKG)1287-3051448-305
M6X11221-306206-306(12/PKG)1287-3061448-306
M7X11221-307206-307(12/PKG)1289-3071448-307
M8X1.251221-308206-308(12/PKG)1289-3081448-308
M9X1.251221-309206-309(12/PKG)1289-3091448-309
M10X1.51221-310206-310(12/PKG)1289-3101448-310
M11X1.51221-311206-311(6/PKG)1289-3111448-311
M12X1.753221-M12C106-312(6/PKG)1289-3125043-120CP4
M14X23221-M14C106-314(6/PKG)1289-3145043-140CP4
M16X23221-M16C106-316(6/PKG)1289-3165043-160CP4
M18X2.53221-M18C106-318(6/PKG)1289-3185043-180CP4
M20X2.53221-M20C106-320(6/PKG)1289-3205043-200CP4
Metric Fine
M8X1.01221-M8F106-608(6/PKG)1287-6081448-608
M10X1.01221-M1010106-61010(6/PKG)1287-610101448-61010
M10X1.253221-M10F106-610(12/PKG)1287-6101448-610
M11X1.01221-M11F106-611(6/PKG)1287-6111448-611
M11X1.251221-M1125106-61125(6/PKG)127-611251448-61125
M12X1.253221-M12F106-612(6/PKG)1287-6125043-120FP4
M12X1.53221-M1215106-61215(6/PKG)1287-612155043-1215FP4
M14X1.53221-M14F106-614(6/PKG)1287-6145043-140FP4
M16X1.53221-M16F106-616(6/PKG)1287-6165043-160FP4