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Heli-CoilŪ inserts are precision formed screw thread coils of stainless steel wire having a diamond shaped cross section. When they are installed into Heli-CoilŪ tapped holes, they provide permanent conventional 60' internal screw threads that accommodate any standard bolt or screw.
 
Master Thread Repair Kits
TEC # Description Heli-Coil #
83400

Helicoil  Master Thread Kit  Inch "Coarse"

5621

83401  Helicoil Master Thread Kit Inch "Fine" 5625

 
Helicoil "Coarse" Inch Kits  
TEC # Description  Helicoil "Coarse" Heli-Coil #  
83420

8-32 x .246

5521-2

83421  10-24 x .285 5521-3
83422 12-24 x .324 5521-1
83423 1/4-20 x .375 5521-4
83425 3/8-16 x .562 5521-6
83426 7/16-14 x .285 5521-7
83429 5/8-11 x .938 5521-10
 
Helicoil "Fine" Inch Kits  
TEC # Description  Helicoil "Fine" Heli-Coil #  
83448

10-32 x .285

5528-3

83451

 1/4-28 x .375

5528-4

83452 5/16-24 x .469 5528-5
83453 3/8-24 x .562 5528-6
83457 5/8-11 x .938 5528-10
 
Helicoil Inserts  
TEC # Size Heli-Coil #  
83500

 8-32 x .246

R1185-2

83501

10-24 x .285

R1185-3

83502 12-24 x .324 R1185-1
83504 1/4-20 x .375  R1185-5
83505 3/8-16 x .562 R1185-6
83506 7/16-14 x .565 R1185-7
83507 1/2-13 x .750 R1185-8
83509  5/8-11 x .930 R1185-10
83515 10-32 x .285 R1191-3
83516 1/4-28 x .375 R1191-4
83517 5/16-24 x .469 R1191-5
83518  3/8-24 x .562 R1191-6
83519 7/16-20 x .656 R1191-7
83520 1/2-20 x .750 R1191-8
83521 5/8-18 x .938 R1191-10
 
Helicoil Inserts (pack of 4)  
TEC # Size Heli-Coil #  
83553

3/8-16 x .938

1185-85 938

 
 
Helicoil Spark Plug Repair Kits  
TEC # Description Heli-Coil #  
83470

Helicoil Spark Plug Kit 10mm

5523-10

83473 Helicoil Spark Plug Kit 12mm 5523-12
83475 Helicoil Spark Plug Kit 14mm 5523-14
 
Helicoil Spark Plug Repair Kits Inserts  
TEC # Description Heli-Coil #  
83530

 10mm x 1/2

R474-4

83531 12mm x 1/2 R482-1
83532 12mm x 3/4 R482-2
83534 14mm x 3/8 R512
83535 14mm x 7/16 R513
83536 14mm x 1/2 R513-13
83537 14mm x 3/4 R513-10
83538 14mm x .472 R513-20
 
 
Save a Thread Repair Kits  
TEC # Description Heli-Coil #  
83477 Helicoil Save a Thread Kit 14mm 4533-14
 
Save a Thread Inserts  
TEC # Description Heli-Coil #  
83540

 14mm Short

R5326-14S-6

83541 14mm Std R5326-14N-6
83542 14mm Long R5326-14L-6
 
 
Harley-Davidson Helicoil Repair Kits  
TEC # Description   Heli-Coil #  
83480 Cam Cover Tappet Guide Kit 1/4-24 x .500  
83481  Front / Rear Brake drums Kit 3/8-20 x .375  
83482 Knucklehead Head Bolts Kit 7/16-16 x .656  
83483  Drain Plugs Early XL Kit 1/2-13 x .375  
83484 Drain Plug Big Twin Kit 1/2-20 x .375  
83485 Timing Plug Kit 5/8-18 x .325  
83486 Case Bolts / Generator Kit 5/16-18 x .469  
83487 Transmission cover Big Twin Kit  5/16-18 x .469  
83488 Shovelhead Head Bolts Kit 7/16 x 20  
 

 

 

Helicoil Inserts

83545 Harley 12 pack 1/4-24 x .500

83546 Harley 6 pack 3/8-20 x .375

83547 Harley 6 pack 7/16-16 x .656

83548 Harley 6 pack 1/2-13 x .375

83549 Harley 6 pack 1/2-20 x .375

83550 Harley 6 pack 5/8-18 x .325

83551 Harley 12 pack 5/16-18 x .469

83552 Harley Lock Inserts (6) 5/16-18 x .469

 

 

 

 

Helicoil "Drill Out"

83570 "Drill Out" Stud extractor Kit 80-401

83571 "Drill Out" Micro extractor Kit 80-450

83572 Micro #5#6M3 Ea 80-125

83573 Micro #8#M4 Ea 80-164

83574 Micro #10#12M5 Ea 80-190

83575 Micro 1/4"M6 Ea 80-236

83576 1/4"M6 Ea 80-250

83577 5/16"M8 Ea 80-312

83578 3/8"M10 Ea 80-375

83579 1/2"M12 Ea 80-500

 

 

Other Inserts

83554 Head Bolt Inserts (5) 7/16-20 x .875

83555 Shovel Exhaust Stud (12) 5/16-20 x .625