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  HeliCoil Inserts, Kato Inserts, ReCoil Inserts  
      Free Running (UNC)  
      Free Running (UNF)  
      Screw-Locking (UNC)  
      Screw-Locking (UNF)  
       Metric Inserts  
       Tangless Inserts  
       Thread Repair Kits  
      

 

 

 

 

 

Free Running UNC Helical  Kato Inserts

T
he resilient characteristics of each coil in a CoilThread Insert allows it to adjust independently to secure the maximum surface contact with individual threads in the parent material. As a result, loads are distributed more evenly. Stress and fatigue concentrations are reduced to maximize thread strength and increase the reliability and life of the fastening system.

The stainless steel used resists corrosion under normal environmental conditions. Galvanic action within the thread assembly is reduced, further adding to the life of the fastening assembly. Kato Inserts are used with temperatures from -320°F to +800°F (-195.6°C to +426.7°C).

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Precision engineering, exacting manufacturing standards, and stringent quality control procedures assure a high quality product that meets or exceeds all applicable military and aerospace standards

Lower Pricing than competitive inserts!
Meet or exceed all applicable military, aerospace and commercial standards. Full Traceability!
Complete range of locking and free-running sizes, bulk or strip, unified or metric.
CoilThread Inserts are available in Bulk and on Strip Feed Reels...
Providing flexibility for any production set-up.
Design and Application Assistance: Over 25 years of manufacturing and engineering experience.
Full line of taps, gages, hand tools, air tools, and electric tools available...100% interchangeable and will install HeliCoil Inserts, Microdot, Recoil and all other major brands of inserts.
The Kato Guarantee: Try Kato CoilThread Inserts...You have nothing to lose!.

UNC Helical Inserts - Free Running
Setup Data


 

 
HeliCoil Insert Cross Ref Military Thread Length Alu. Drill Steel Drill Drill Depth A Drill Depth B Csk. Min D Csk. Max D Thread Depth C Outside Dia. Min Outside Dia. Max
1185-1CN216   12-24 0.216 #1 #1 0.574 0.383 0.26 0.29 0.26 0.27 0.285
1185-1CN324   12-24 0.324 #1 #1 0.682 0.491 0.26 0.29 0.37 0.27 0.285
1185-1CN432   12-24 0.432 #1 #1 0.79 0.599 0.26 0.29 0.47 0.27 0.285
1185-02CN086 MS122095 2-56 0.086 3/32 #41 0.236 0.157 0.09 0.11 0.1 0.11 0.119
1185-02CN129 MS122135 2-56 0.129 3/32 #41 0.279 0.2 0.09 0.11 0.15 0.11 0.119
1185-02CN172 MS122175 2-56 0.172 3/32 #41 0.322 0.243 0.09 0.11 0.19 0.11 0.119
1185-2CN164 MS122079 8-32 0.164 #17 #16 0.434 0.289 0.2 0.23 0.2 0.205 0.22
1185-2CN246 MS122119 8-32 0.246 #17 #16 0.516 0.371 0.2 0.23 0.28 0.205 0.22
1185-2CN328 MS122159 8-32 0.328 #17 #16 0.598 0.453 0.2 0.23 0.36 0.205 0.22
1185-3CN190 MS122080 10-24 0.19 13/64 #5 0.535 0.357 0.24 0.27 0.23 0.244 0.259
1185-3CN285 MS122120 10-24 0.285 13/64 #5 0.63 0.452 0.24 0.27 0.33 0.244 0.259
1185-3CN380 MS122160 10-24 0.38 13/64 #5 0.725 0.547 0.24 0.27 0.42 0.244 0.259
1185-03CN099 MS122115 3-48 0.099 #36 7/64 0.273 0.182 0.11 0.14 0.12 0.128 0.139
1185-03CN148 MS122155 3-48 0.148 #36 7/64 0.323 0.231 0.11 0.14 0.17 0.128 0.139
1185-03CN198 MS122195 3-48 0.198 #36 7/64 0.372 0.281 0.11 0.14 0.22 0.128 0.139
1185-04CN112 MS122076 4-40 0.112 #31 #31 0.318 0.212 0.14 0.17 0.14 0.144 0.159
1185-04CN168 MS122116 4-40 0.168 #31 #31 0.374 0.268 0.14 0.17 0.19 0.144 0.159
1185-04CN224 MS122156 4-40 0.224 #31 #31 0.43 0.324 0.14 0.17 0.25 0.144 0.159
1185-05CN125 MS122077 5-40 0.125 3.4mm #29 0.338 0.225 0.16 0.19 0.15 0.158 0.173
1185-05CN188 MS122117 5-40 0.188 3.4mm #29 0.4 0.288 0.16 0.19 0.21 0.158 0.173
1185-05CN250 MS122157 5-40 0.25 3.4mm #29 0.462 0.35 0.16 0.19 0.28 0.158 0.173
1185-06CN138 MS122078 6-32 0.138 #26 #25 0.394 0.263 0.18 0.21 0.17 0.178 0.193
1185-06CN207 MS122118 6-32 0.207 #26 #25 0.464 0.332 0.18 0.21 0.24 0.178 0.193
1185-06CN276 MS122158 6-32 0.276 #26 #25 0.532 0.401 0.18 0.21 0.31 0.178 0.193
1185-4CN250 MS122081 1/4-20 0.25 H H 0.675 0.45 0.31 0.34 0.3 0.31 0.33
1185-4CN375 MS122121 1/4-20 0.375 H H 0.8 0.575 0.31 0.34 0.43 0.31 0.33
1185-4CN500 MS122161 1/4-20 0.5 H H 0.925 0.925 0.31 0.34 0.55 0.31 0.33
1185-5CN312 MS122082 5/16-18 0.312 Q Q 0.801 0.534 0.38 0.41 0.37 0.38 0.4
1185-5CN469 MS122122 5/16-18 0.469 Q Q 0.957 0.691 0.38 0.41 0.53 0.38 0.4
1185-5CN625 MS122162 5/16-18 0.625 Q Q 1.113 0.847 0.38 0.41 0.68 0.38 0.4
1185-6CN375 MS122083 3/8-16 0.375 X X 0.75 0.625 0.45 0.48 0.44 0.452 0.472
1185-6CN562 MS122123 3/8-16 0.562 X X 0.938 0.812 0.45 0.48 0.63 0.452 0.472
1185-6CN750 MS122163 3/8-16 0.75 X X 1.125 1 0.45 0.48 0.81 0.452 0.472
1185-7CN438 MS122084 7/16-14 0.438 29/64 29/64 0.867 0.724 0.52 0.55 0.51 0.526 0.551
1185-7CN656 MS122124 7/16-14 0.656 29/64 29/64 1.086 0.942 0.52 0.55 0.73 0.526 0.551
1185-7CN875 MS122164 7/16-14 0.875 29/64 29/64 1.305 1.161 0.52 0.55 0.95 0.526 0.551
1185-8CN1000 MS122085 1/2-13 1 33/64 17/32 1.462 1.308 0.59 0.62 1.08 0.597 0.622
1185-8CN500 MS122125 1/2-13 0.5 33/64 17/32 0.962 0.808 0.59 0.62 0.58 0.597 0.622
1185-8CN750 MS122165 1/2-13 0.75 33/64 17/32 1.212 1.058 0.59 0.62 0.83 0.597 0.622

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TANGLESS® is a registered trademark of Advanex Inc.
POP Rivet® is a registered trademark of Emhart Teknologies, LLC.
Recoil® is a registered trademark of Alcoa.