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-Coil Kit 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). Nominal length is a calculated number and cannot be measured in the free state. It is the actual installed length plus 1/2 pitch.
  • 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 Drill
Size
Pack of Inserts Installation Tool Tap
Unified Coarse
4-401208-014208-014(12/PKG)1172-0141428-0141/8
5-401208-015208-015(12/PKG)1172-0151428-0159/64
6-321208-016208-016(12/PKG)1182-0161428-0165/32
8-321208-018208-018(12/PKG)1182-0181428-01811/64
10-241208-101208-101(12/PKG)1182-1011428-10113/64
12-241208-102208-102(12/PKG)1182-1021428-10215/64
1/4-201208-104208-104(12/PKG)1182-1041428-10417/64
5/16-181208-105208-105(12/PKG)1182-1051428-10521/64
3/8-161208-106208-106(12/PKG)1182-1061428-10625/64
7/16-141208-107208-107(6/PKG)1182-1071428-10729/64
1/2-131208-108208-108(6/PKG)1182-1081428-10817/32
9/16-121208-109208-109(6/PKG)1182-1091428-10919/32
5/8-111208-110208-110(6/PKG)1182-1101428-11021/32
3/4-101208-112208-112(4/PKG)1182-1121428-11225/32
7/8-93208-C14108-114(1/PKG)1182-1141043-14C9329/32
1-83208-C16108-116(1/PKG)1182-1161043-16C931 1/32
1 1/8-73208-C18108-118(1/PKG)1182-1181043-18C931 11/64
1 1/4-73208-C20108-120(1/PKG)1182-1201043-20C931 19/64
1 3/8-63208-C22108-122(1/PKG)1182-1221043-22C931 27/64
1 1/2-63208-C24108-124(1/PKG)1182-1241043-24C931 35/64
Unified Fine
10-321208-201208-201(12/PKG)1172-2011428-20113/64
1/4-281208-204208-204(12/PKG)1172-2041428-20417/64
5/16-241208-205208-205(12/PKG)1172-2051428-20521/64
3/8-241208-206208-206(12/PKG)1172-2061428-20625/64
7/16-201208-207208-207(6/PKG)1172-2071428-20729/64
1/2-201208-208208-208(6/PKG)1172-2081428-20833/64
9/16-181208-209208-209(6/PKG)1172-2091428-20937/64
5/8-181208-210208-210(6/PKG)1172-2101428-21041/64
3/4-161208-212208-212(4/PKG)1172-2121428-21249/64
7/8-143208-F14108-214(1/PKG)1039-14F1043-14FP357/64
1-143208-F164108-2164(1/PKG)1039-164F1043-164FP31 1/64
1-123208-F16108-216(1/PKG)1039-16F1043-16FP31 1/64
1 1/8-123208-F18108-218(1/PKG)1039-18F1043-18FP31 5/32
1 1/4-123208-F20108-220(1/PKG)1039-20F1043-20FP31 9/32
1 3/8-123208-F22208-222(1/PKG)1039-22F1043-22FP31 13/32
1 1/2-123208-F24108-224(1/PKG)1039-24F1043-24FP31 17/32
Metric Coarse
M3X0.51221-303206-303(12/PKG)1287-3031448-3031/8
M4X0.71221-304206-304(12/PKG)1287-3041448-30411/64
M5X0.81221-305206-305(12/PKG)1287-3051448-30513/64
M6X11221-306206-306(12/PKG)1287-3061448-3061/4
M7X11221-307206-307(12/PKG)1289-3071448-3079/32
M8X1.251221-308206-308(12/PKG)1289-3081448-30821/64
M9X1.251221-309206-309(12/PKG)1289-3091448-3093/8
M10X1.51221-310206-310(12/PKG)1289-3101448-31013/32
M11X1.51221-311206-311(6/PKG)1289-3111448-31129/64
M12X1.753221-M12C106-312(6/PKG)1289-3125043-120CP431/64
M14X23221-M14C106-314(6/PKG)1289-3145043-140CP437/64
M16X23221-M16C106-316(6/PKG)1289-3165043-160CP421/32
M18X2.53221-M18C106-318(6/PKG)1289-3185043-180CP447/64
M20X2.53221-M20C106-320(6/PKG)1289-3205043-200CP413/16
Metric Fine
M8X1.01221-M8F106-608(6/PKG)1287-6081448-60821/64
M10X1.01221-M1010106-61010(6/PKG)1287-610101448-6101013/32
M10X1.253221-M10F106-610(12/PKG)1287-6101448-61013/32
M11X1.01221-M11F106-611(6/PKG)1287-6111448-6117/16
M11X1.251221-M1125106-61125(6/PKG)127-611251448-6112529/64
M12X1.253221-M12F106-612(6/PKG)1287-6125043-120FP431/64
M12X1.53221-M1215106-61215(6/PKG)1287-612155043-1215FP431/64
M14X1.53221-M14F106-614(6/PKG)1287-6145043-140FP49/16
M16X1.53221-M16F106-616(6/PKG)1287-6165043-160FP421/32
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