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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 UNF Kato Helical Inserts

CoilThread tanged inserts are made of cold-rolled 304 stainless steel wire (AS7245), work-hardened to a tensile strength above 200,000 psi, and a hardness of Rc 43-50. The finished surface (8-16 micro-inches) is exceedingly smooth, virtually eliminating friction-induced thread erosion.

When assembled with STI-tapped holes, CoilThread inserts form Unified Coarse, or Unified Fine threads that conform to the National Bureau of Standards Handbook H-28, Screw-Thread Standards for Federal Services, Classes 2B and 3B. Assembled CoilThread inserts will also accommodate UNJ, MIL-S-8879, male threaded fasteners. Metric CoilThread inserts conform to National Bureau of Standards Handbook H-28/21, M Profile, Tolerance Classes 4H5H or 5H, as well as ISO standards 68, 261, R724 and 965/I. Assembled metric inserts will also accommodate MJ, AS1370, male threaded fasteners.

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UNF Helical Inserts - Free Running
Setup Data


 

HeliCoil Part Number Cross Ref Military Cross Reference 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
1191-2CN164 MS124654 8-36 0.164 #17 #16 0.413 0.275 0.2 0.23 0.19 0.204 0.224
1191-2CN246 MS124694 8-36 0.246 #17 #16 0.495 0.357 0.2 0.23 0.27 0.204 0.224
1191-2CN328 MS124734 8-36 0.328 #17 #16 0.577 0.439 0.2 0.23 0.36 0.204 0.224
1191-3CN190 MS124655 10-32 0.19 #7 13/64 0.472 0.315 0.23 0.26 0.22 0.236 0.256
1191-3CN285 MS124695 10-32 0.285 #7 13/64 0.568 0.41 0.23 0.26 0.32 0.236 0.256
1191-3CN380 MS124735 10-32 0.38 #7 13/64 0.662 0.505 0.23 0.26 0.41 0.236 0.256
1191-03CN099 MS124670 3-56 0.099 #37 #36 0.256 0.17 0.11 0.14 0.12 0.131 0.146
1191-03CN148 MS124710 3-56 0.148 #37 #36 0.305 0.219 0.11 0.14 0.17 0.131 0.146
1191-03CN198 MS124750 3-56 0.198 #37 #36 0.355 0.269 0.11 0.14 0.22 0.131 0.146
1191-04CN112 MS124671 4-48 0.112 3mm #31 0.293 0.195 0.14 0.17 0.13 0.147 0.162
1191-04CN168 MS124711 4-48 0.168 3mm #31 0.349 0.251 0.14 0.17 0.19 0.147 0.162
1191-04CN224 MS124751 4-48 0.224 3mm #31 0.405 0.307 0.14 0.17 0.24 0.147 0.162
1191-4CN250 MS124656 1/4-28 0.25 G 6.7mm 0.589 0.393 0.29 0.32 0.29 0.306 0.326
1191-4CN375 MS124696 1/4-28 0.375 G 6.7mm 0.714 0.518 0.29 0.32 0.41 0.306 0.326
1191-4CN500 MS124736 1/4-28 0.5 G 6.7mm 0.839 0.643 0.29 0.32 0.54 0.306 0.326
1191-5CN312 MS124657 5/16-24 0.312 21/64 21/64 0.718 0.479 0.36 0.39 0.35 0.38 0.4
1191-5CN469 MS124697 5/16-24 0.469 21/64 21/64 0.874 0.646 0.36 0.39 0.51 0.38 0.4
1191-5CN625 MS124737 5/16-24 0.625 21/64 21/64 1.03 0.792 0.36 0.39 0.67 0.38 0.4
1191-06CN138 MS124653 6-40 0.138 #26 #25 0.357 0.238 0.17 0.2 0.16 0.173 0.193
1191-06CN207 MS124693 6-40 0.207 #26 #25 0.426 0.307 0.17 0.2 0.23 0.173 0.193
1191-06CN276 MS124733 6-40 0.276 #26 #25 0.495 0.376 0.17 0.2 0.3 0.173 0.193
1191-6CN375 MS124658 3/8-24 0.375 25/64 25/64 0.625 0.542 0.42 0.45 0.42 0.448 0.468
1191-6CN562 MS124698 3/8-24 0.562 25/64 25/64 0.812 0.729 0.42 0.45 0.6 0.448 0.468
1191-6CN750 MS124738 3/8-24 0.75 25/64 25/64 1 0.917 0.42 0.45 0.79 0.448 0.468
1191-7CN438 MS124659 7/16-20 0.438 29/64 29/64 0.738 0.638 0.5 0.53 0.49 0.524 0.549
1191-7CN656 MS124699 7/16-20 0.656 29/64 29/64 0.957 0.856 0.5 0.53 0.71 0.524 0.549
1191-7CN875 MS124739 7/16-20 0.875 29/64 29/64 1.176 1.075 0.5 0.53 0.93 0.524 0.549
1191-8CN1000 MS124740 1/2-20 1 33/64 33/64 1.3 1.2 0.56 0.59 1.05 0.592 0.617
1191-8CN500 MS124660 1/2-20 0.5 33/64 33/64 0.8 0.7 0.56 0.59 0.55 0.592 0.617
1191-8CN750 MS124700 1/2-20 0.75 33/64 33/64 1.05 0.95 0.56 0.59 0.8 0.592 0.617
 
 
KATO Part # MS/MA Number HeliCoil Part #
TNF-03C-0099 MS124670 1191-03CN-0099
TNF-03C-0148 MS124710 1191-03CN-0148
TNF-03C-0198 MS124750 1191-03CN-0198
TNF-06C-0138 MS124653 1191-06CN-0138
TNF-06C-0207 MS124693 1191-06CN-0207
TNF-06C-0207SF MS124693 1191-06CN-0207S
TNF-06C-0276SF MS124733 1191-06CN-0276S
TNF-2C-0410 MS124774 1191-2CN-0410
TNF-3C-0190 MS124655 1191-3CN-0190
TNF-3C-0190SF MS124655 1191-3CN-0190S
TNF-3C-0285 MS124695 1191-3CN-0285
TNF-3C-0285SF MS124695 1191-3CN-0285S
TNF-3C-0380 MS124735 1191-3CN-0380
TNF-3C-0380SF MS124735 1191-3CN-0380S
TNF-3C-0475 MS124775 1191-3CN-0475
TNF-3C-0570 MS124815 1191-3CN-0570
TNF-4C-0250 MS124656 1191-4CN-0250
TNF-4C-0250SF MS124656 1191-4CN-0250S
TNF-4C-0375 MS124696 1191-4CN-0375
TNF-4C-0375SF MS124696 1191-4CN-0375S
TNF-4C-0500 MS124736 1191-4CN-0500
TNF-4C-0500SF MS124736 1191-4CN-0500S
TNF-4C-0625 MS124776 1191-4CN-0625
TNF-4C-0750 MS124816 1191-4CN-0750
TNF-5C-0312 MS124657 1191-5CN-0312
TNF-5C-0312SF MS124657 1191-5CN-0312S
TNF-5C-0312Y MS124657P 1191-5CNY-0312
TNF-5C-0469 MS124697 1191-5CN-0469
TNF-5C-0469SF MS124697 1191-5CN-0469S
TNF-5C-0625 MS124737 1191-5CN-0625
TNF-5C-0938 MS124817 1191-5CN-0938
TNF-6C-0375 MS124658 1191-6CN-0375
TNF-6C-0562 MS124698 1191-6CN-0562
TNF-6C-0750 MS124738 1191-6CN-0750
TNF-6C-0938 MS124778 1191-6CN-0938
TNF-6C-1125 MS124818 1191-6CN-1125
TNF-7C-0438 MS124659 1191-7CN-0438
TNF-7C-0656 MS124699 1191-7CN-0656
TNF-7C-0875 MS124739 1191-7CN-0875
TNF-7C-1094 MS124779 1191-7CN-1094
TNF-7C-1312 MS124819 1191-7CN-1312
TNF-8C-0500 MS124660 1191-8CN-0500
TNF-8C-0750 MS124700 1191-8CN-0750
TNF-8C-1000 MS124740 1191-8CN-1000
TNF-8C-1250 MS124780 1191-8CN-1250
TNF-8C-1500 MS124820 1191-8CN-1500
TNF-9C-0562 MS124661 1191-9CN-0562
TNF-9C-0844 MS124701 1191-9CN-0844
TNF-9C-1125 MS124741 1191-9CN-1125
TNF-9C-1406 MS124781 1191-9CN-1406
TNF-9C-1688 MS124821 1191-9CN-1688
TNF-10C-0625 MS124662 1191-10CN-0625
TNF-10C-0938 MS124702 1191-10CN-0938
TNF-10C-1250 MS124742 1191-10CN-1250
TNF-10C-1562 MS124782 1191-10CN-1562
TNF-10C-1875 MS124822 1191-10CN-1875
TNF-12C-0750 MS124663 1191-12CN-0750
TNF-12C-1125 MS124703 1191-12CN-1125
TNF-12C-1500 MS124743 1191-12CN-1500
TNF-12C-1875 MS124783 1191-12CN-1875
TNF-12C-2250 MS124823 1191-12CN-2250
TNF-14C-0875 MS124664 1191-14CN-0875
TNF-14C-1312 MS124704 1191-14CN-1312
TNF-14C-1750 MS124744 1191-14CN-1750
TNF-14C-2188 MS124784 1191-14CN-2188
TNF-14C-2625 MS124824 1191-14CN-2625
TNF-161C-1000 MS124651 1191-161CN-1000
TNF-161C-1500 MS124691 1191-161CN-1500
TNF-161C-2000 MS124731 1191-161CN-2000
TNF-161C-2500 MS124771 1191-161CN-2500
TNF-161C-3000 MS124811 1191-161CN-3000
TNF-18C-1125 MS124666 1191-18CN-1125
TNF-18C-1125Y MS124666P 1191-18CNY-1125
TNF-18C-1688 MS124706 1191-18CN-1688
TNF-18C-2250 MS124746 1191-18CN-2250
TNF-18C-2812 MS124786 1191-18CN-2812
TNF-18C-3375 MS124826 1191-18CN-3375
TNF-20C-1250 MS124667 1191-20CN-1250
TNF-20C-1875 MS124707 1191-20CN-1875
TNF-20C-2500 MS124747 1191-20CN-2500
TNF-20C-3125 MS124787 1191-20CN-3125
TNF-20C-3750 MS124827 1191-20CN-3750
TNF-22C-1375 MS124668 1191-22CN-1375
TNF-22C-2062 MS124708 1191-22CN-2062
TNF-22C-2750 MS124748 1191-22CN-2750
TNF-22C-3438 MS124788 1191-22CN-3438
TNF-22C-4125 MS124828 1191-22CN-4125
TNF-24C-1500 MS124669 1191-24CN-1500
TNF-24C-2250 MS124709 1191-24CN-2250
TNF-24C-3000 MS124749 1191-24CN-3000
TNF-24C-3750 MS124789 1191-24CN-3750
TNF-24C-4500 MS124829 1191-24CN-4500

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