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Helicoil Kit
Helicoil insets are available in thread repair kits and sets for repairing tapped holes which have been stripped or damaged due to wear, corrosion and over torque. They are available in inch, metric, spark plug and pipe thread series.

All kits have a quantity of inserts, the proper size drill, high speed steel Heli-Coil tap and an installation tool. The Professional Kits also includes a tang removal tool and quantities of three lengths of inserts.
Thread
Size
Kit
P/N
Inserts
per Kit
Inch Coarse Thread(UNC)
4-40 5401-04 36*
5-40 5401-05 36*
6-32 5401-06 36*
8-32 5401-2 36*
10-24 5401-3 36*
12-24 5401-1 36*
1/4-20 5401-4 36*
5/16-18 5401-5 36*
3/8-16 5401-6 18*
7/16-14 5401-7 18*
1/2-13 5401-8 18*
9/16-12 5401-9 6
5/8-11 5401-10 6
3/4-10 5401-12 4
7/8-9 5521-14 6
1-8 5521-16 6
1-1/8-7 5521-18 5
1-1/4-7 5521-20 4
1-3/8-6 5521-22 4
1-1/2-6 5521-24 4
Inch Fine Thread(UNF)
6-40 5402-06 36*
8-36 5402-2 36*
10-32 5402-3 36*
1/4-28 5402-4 36*
5/16-24 5402-5 36*
3/8-24 5402-6 18*
7/17-20 5402-7 18*
1/2-20 5402-8 18*
9/16-18 5402-9 6
5/8-18 5402-10 6
3/4-16 5402-12 4
7/8-14 5528-14 6
1-14 5528-16 6
1-12 5528-161 6
1-1/8-12 5528-18 5
1-1/4-12 5528-20 4
1-3/8-12 5528-22 4
1-1/2-12 5528-24 4
*The total quantity of inserts in the Professional Kits represents 3 lengths.
Thread
Size
Kit
P/N
Inserts
per Kit
Metric Coarse
M3x0.5 5403-3 36*
M3.5x0.6 5403-3.5 36*
M4x0.7 5403-4 18*
M5x0.8 5403-5 18*
M6x1 5403-6 18*
M7x1 5403-7 18*
M8x1.25 5403-8 18*
M9x1.25 5403-9 12
M10x1.5 5403-10 18*
M11x1.5 5403-11 6
M12x1.75 5403-12 18*
M14x2 5403-14 12
M16x2 5403-16 6
M18x2.5 5403-18 6
M20x2.5 5403-20 4
Metric Fine
M8x1 5404-8 18*
M10x1 5404-10 18*
M10x1.25 5404-10 18*
M12x1.25 5404-12 18*
M12x1.5 5404-12 18*
M14x1.5 5404-14 6
M16x1.5 5404-16 6
M18x1.5 5404-18 6
SPARK PLUG SERIES
Thread
Size
Part No. Reach Inserts
Per Kit
10-1.0mm 5523-10 1/2 24
12-1.25mm 5523-12 1/2 12
    3/4 12
14-1.25mm 5523-14
3/8 6
7/16 6
1/2 6
3/4 6
.472 6
18-1.50mm 5523-18 1/2 24
7/8-18 550 1/2-5/8 10
M14x1.25*   Short 6
  Normal 6
  Long 6
 
PIPE THREAD SERIES
 
Thread
Size
Part No. Inserts
Per Kit
1/8-27 5407-2 12
1/4-18 5407-4 12
3/8-18 5407-6 10
1/2-14 5407-8 10
3/4-14 5407-12 10
1-11-1/2 5407-16 6
*The total quantity of inserts in the Professional Kits represents 3 lengths.  
MASTER THREAD REPAIR SETS
Type Part No. Insert sizes included in set
Inch Coarse 4934 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13, 5/8-11
Inch Fine 4936 10-32, 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20
Metric 4937-125 M5x0.8, M6x1, M8x1.25, M10x1.25
Metric 4937-150 M5x0.8, M6x1, M8x1.25, M10x1.5
All sets contain a drill, tap, tool and inserts for each size listed above.
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Download Product Catalogues
HeliCoil Catalogue HeliCoil Technical Catalogue
HeliCoil Professional Kit HeliCoil Professional Kits
HeliCoil  After Market Kit HeliCoil After Market Kits
 
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