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Helicoil Thread Repair Insert
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Thread Repair Coil Inserts

Thread Repair Coil Inserts

Coil inserts are helically coiled diamond-shaped wire that is inserted into an oversized tapped hole. Once in place, they will bring the inside thread of the coil back to the original thread size. Coil inserts can be used for repair of damaged threads, or for new installations to provide greater thread strength due to their high percentage of thread engagement. Made from corrosion resistant 18-8 stainless steel, these coil inserts can withstand temperatures up to 800°F. Available in both imperial and metric kits that provide inserts, a tap and installation tool.  If more coils are needed, we also offer individual packs of coil inserts.

Thread Repair Coil Inserts
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Diameter Length Type Item # Availability Price Quantity UOM

4-40 THREAD REPAIR COIL INSERT 10 PACK

$7.32127/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $7.32127/ EA
6 $6.93689/ EA
18 $6.11218/ EA
48 $4.45182/ EA

4-40 THREAD REPAIR KIT WITH 10 INSERTS

$51.99541/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $51.99541/ EA
4 $49.26551/ EA
8 $43.40844/ EA
24 $31.61662/ EA

6-32 THREAD REPAIR KIT WITH 10 INSERTS

$37.12317/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $37.12317/ EA
4 $35.1741/ EA
8 $30.99233/ EA
24 $22.57332/ EA

6-32 THREAD REPAIR COIL INSERT 10 PACK

$8.98651/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $8.98651/ EA
6 $8.51469/ EA
18 $7.5024/ EA
48 $5.46439/ EA

8-32 THREAD REPAIR COIL INSERT 10 PACK

$7.13465/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $7.13465/ EA
6 $6.76007/ EA
18 $5.95638/ EA
48 $4.33834/ EA

8-32 THREAD REPAIR KIT WITH 10 INSERTS

$40.31008/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $40.31008/ EA
4 $38.19369/ EA
8 $33.65292/ EA
24 $24.51117/ EA

10-24 THREAD REPAIR COIL INSERT 10 PACK

$13.42951/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $13.42951/ EA
6 $12.72443/ EA
18 $11.21165/ EA
48 $8.16603/ EA

10-24 THREAD REPAIR KIT WITH 10 INSERTS

$36.31927/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $36.31927/ EA
4 $34.4124/ EA
8 $30.32119/ EA
24 $22.0845/ EA

10-32 THREAD REPAIR COIL INSERT 10 PACK

$9.46503/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $9.46503/ EA
6 $8.96809/ EA
18 $7.90189/ EA
48 $5.75536/ EA

10-32 THREAD REPAIR KIT WITH 10 INSERTS

$45.55461/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $45.55461/ EA
4 $43.16287/ EA
8 $38.03133/ EA
24 $27.70019/ EA

12-24 THREAD REPAIR KIT WITH 10 INSERTS

$42.39162/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $42.39162/ EA
4 $40.16594/ EA
8 $35.3907/ EA
24 $25.77689/ EA

12-24 THREAD REPAIR COIL INSERT 10 PACK

$10.26414/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $10.26414/ EA
6 $9.72524/ EA
18 $8.56903/ EA
48 $6.24127/ EA

1/4-20 THREAD REPAIR COIL INSERT 10 PACK

$7.73758/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $7.73758/ EA
6 $7.33134/ EA
18 $6.45973/ EA
48 $4.70496/ EA

1/4-20 THREAD REPAIR KIT WITH 10 INSERTS

$38.61614/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $38.61614/ EA
4 $36.58868/ EA
8 $32.23873/ EA
24 $23.48115/ EA

1/4-28 THREAD REPAIR COIL INSERT 10 PACK

$8.32616/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $8.32616/ EA
6 $7.88901/ EA
18 $6.9511/ EA
48 $5.06285/ EA

1/4-28 THREAD REPAIR KIT WITH 10 INSERTS

$45.62159/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $45.62159/ EA
4 $43.22633/ EA
8 $38.08725/ EA
24 $27.74092/ EA

5/16-18 THREAD REPAIR COIL INSERT 10 PACK

$10.3876/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $10.3876/ EA
6 $9.84222/ EA
18 $8.6721/ EA
48 $6.31634/ EA

5/16-18 THREAD REPAIR KIT WITH 10 INSERTS

$43.72667/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $43.72667/ EA
4 $41.4309/ EA
8 $36.50527/ EA
24 $26.58869/ EA

5/16-24 THREAD REPAIR COIL INSERT 10 PACK

$9.79041/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $9.79041/ EA
6 $9.27639/ EA
18 $8.17354/ EA
48 $5.95321/ EA

5/16-24 THREAD REPAIR KIT WITH 10 INSERTS

$45.35171/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $45.35171/ EA
4 $42.97062/ EA
8 $37.86194/ EA
24 $27.57682/ EA

3/8-16 THREAD REPAIR COIL INSERT 10 PACK

$11.17809/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $11.17809/ EA
6 $10.59121/ EA
18 $9.33205/ EA
48 $6.79701/ EA

3/8-16 THREAD REPAIR KIT WITH 10 INSERTS

$55.46225/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $55.46225/ EA
4 $52.55033/ EA
8 $46.30273/ EA
24 $33.72469/ EA

3/8-24 THREAD REPAIR KIT WITH 10 INSERTS

$56.22547/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $56.22547/ EA
4 $53.27348/ EA
8 $46.93991/ EA
24 $34.18877/ EA

3/8-24 THREAD REPAIR COIL INSERT 10 PACK

$11.63747/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $11.63747/ EA
6 $11.02647/ EA
18 $9.71556/ EA
48 $7.07634/ EA

7/16-14 THREAD REPAIR KIT WITH 5 INSERTS

$59.77606/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $59.77606/ EA
4 $56.63765/ EA
8 $49.90412/ EA
24 $36.34777/ EA

7/16-14 THREAD REPAIR COIL INSERT 5 PACK

$6.3451/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $6.3451/ EA
6 $6.01197/ EA
18 $5.29722/ EA
48 $3.85824/ EA

7/16-20 THREAD REPAIR COIL INSERT 5 PACK

$12.7907/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $12.7907/ EA
6 $12.11915/ EA
18 $10.67833/ EA
48 $7.77758/ EA

7/16-20 THREAD REPAIR KIT WITH 5 INSERTS

$63.22136/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $63.22136/ EA
4 $59.90207/ EA
8 $52.78044/ EA
24 $38.44274/ EA

1/2-13 THREAD REPAIR KIT WITH 5 INSERTS

$71.76285/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $71.76285/ EA
4 $67.9951/ EA
8 $59.91131/ EA
24 $43.63652/ EA

1/2-13 THREAD REPAIR COIL INSERT 5 PACK

$9.65642/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $9.65642/ EA
6 $9.14943/ EA
18 $8.06167/ EA
48 $5.87174/ EA

1/2-20 THREAD REPAIR KIT WITH 5 INSERTS

$74.97367/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $74.97367/ EA
4 $71.03735/ EA
8 $62.59187/ EA
24 $45.58891/ EA

1/2-20 THREAD REPAIR COIL INSERT 5 PACK

$9.80477/PK
3-5 Working Days
Product Detail
Quantity Price
Quantity Price
1 $9.80477/ EA
6 $9.28999/ EA
18 $8.18552/ EA
48 $5.96194/ EA

9/16-12 THREAD REPAIR KIT WITH 5 INSERTS

$90.55412/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $90.55412/ EA
4 $85.79978/ EA
8 $75.59923/ EA
24 $55.06285/ EA

9/16-12 THREAD REPAIR COIL INSERT 5 PACK

$20.29859/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $20.29859/ EA
6 $19.23286/ EA
18 $16.94631/ EA
48 $12.34288/ EA

9/16-18 THREAD REPAIR COIL INSERT 5 PACK

$15.82926/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $15.82926/ EA
6 $14.99818/ EA
18 $13.21508/ EA
48 $9.62523/ EA

9/16-18 THREAD REPAIR KIT WITH 5 INSERTS

$95.79386/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $95.79386/ EA
4 $90.76442/ EA
8 $79.97363/ EA
24 $58.24895/ EA

5/8-11 THREAD REPAIR COIL INSERT 5 PACK

$20.93023/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $20.93023/ EA
6 $19.83134/ EA
18 $17.47363/ EA
48 $12.72696/ EA

5/8-11 THREAD REPAIR KIT WITH 5 INSERTS

$98.95205/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $98.95205/ EA
4 $93.7568/ EA
8 $82.61026/ EA
24 $60.16934/ EA

5/8-18 THREAD REPAIR COIL INSERT 5 PACK

$17.31266/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $17.31266/ EA
6 $16.4037/ EA
18 $14.4535/ EA
48 $10.52723/ EA

5/8-18 THREAD REPAIR KIT WITH 5 INSERTS

$95.11915/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $95.11915/ EA
4 $90.12514/ EA
8 $79.41035/ EA
24 $57.83869/ EA

3/4-10 THREAD REPAIR KIT WITH 5 INSERTS

$119.39133/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $119.39133/ EA
4 $113.12296/ EA
8 $99.67402/ EA
24 $72.59777/ EA

3/4-10 THREAD REPAIR COIL INSERT 5 PACK

$28.02182/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $28.02182/ EA
6 $26.5506/ EA
18 $23.39406/ EA
48 $17.03911/ EA

3/4-16 THREAD REPAIR KIT WITH 5 INSERTS

$112.18777/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $112.18777/ EA
4 $106.29761/ EA
8 $93.66012/ EA
24 $68.21753/ EA

3/4-16 THREAD REPAIR COIL INSERT 5 PACK

$28.39506/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $28.39506/ EA
6 $26.90424/ EA
18 $23.70566/ EA
48 $17.26606/ EA

7/8-9 THREAD REPAIR KIT WITH 1 INSERT

$207.26385/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $207.26385/ EA
4 $196.38194/ EA
8 $173.03452/ EA
24 $126.03003/ EA

7/8-9 THREAD REPAIR COIL INSERT 3 PACK

$36.83606/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $36.83606/ EA
6 $34.90207/ EA
18 $30.75264/ EA
48 $22.39874/ EA

1-8 THREAD REPAIR COIL INSERT 3 PACK

$41.65949/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $41.65949/ EA
6 $39.47225/ EA
18 $34.77948/ EA
48 $25.3317/ EA

1-8 THREAD REPAIR KIT WITH 1 INSERT

$238.04192/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $238.04192/ EA
4 $225.54407/ EA
8 $198.72963/ EA
24 $144.74511/ EA

1-14 THREAD REPAIR COIL INSERT 3 PACK

$45.62159/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $45.62159/ EA
6 $43.22633/ EA
18 $38.08725/ EA
48 $27.74092/ EA

1 1/8-7 THREAD REPAIR KIT WITH 1 INSERT

$333.99368/EA
3-5 Working Days
Product Detail
Quantity Price
Quantity Price
1 $333.99368/ EA
4 $316.45811/ EA
8 $278.83509/ EA
24 $203.09008/ EA

1 1/8-7 THREAD REPAIR COIL INSERT SINGLE PACK

$28.39027/EA
3-5 Working Days
Product Detail
Quantity Price
Quantity Price
1 $28.39027/ EA
6 $26.8997/ EA
18 $23.70165/ EA
48 $17.26315/ EA

1 1/4-7 THREAD REPAIR KIT WITH 1 INSERT

$346.1671/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $346.1671/ EA
4 $327.99238/ EA
8 $288.99808/ EA
24 $210.49232/ EA

1 3/8-6 THREAD REPAIR COIL INSERT SINGLE PACK

$236.63508/PK
In Stock
Product Detail
Quantity Price
Quantity Price
1 $236.63508/ EA
6 $224.2111/ EA
18 $197.55513/ EA
48 $143.88966/ EA

1 3/8-6 THREAD REPAIR KIT WITH 1 INSERT

$442.17628/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $442.17628/ EA
4 $418.96083/ EA
8 $369.15149/ EA
24 $268.87221/ EA

1 1/2-6 THREAD REPAIR KIT WITH 1 INSERT

$600.94746/EA
3-5 Working Days
Product Detail
Quantity Price
Quantity Price
1 $600.94746/ EA
4 $569.39608/ EA
8 $501.70182/ EA
24 $365.4155/ EA

1 1/2-6 THREAD REPAIR COIL INSERT SINGLE PACK

$148.34912/PK
3-5 Working Days
Product Detail
Quantity Price
Quantity Price
1 $148.34912/ EA
6 $140.56039/ EA
18 $123.84947/ EA
48 $90.20601/ EA

M4-0.7 THREAD REPAIR KIT WITH 10 INSERTS

$36.06087/EA
In Stock
Product Detail
Quantity Price
Quantity Price
1 $36.06087/ EA
4 $34.16757/ EA
8 $30.10547/ EA
24 $21.92737/ EA