HELICOIL Helical Thread Repair Kits

Helicoil helical thread repair kits are ideal for repairing tapped holes in metal, damaged or stripped due to over-torque / wear / corrosion. They are equipped with a hand drill & installation tool for quick maintenance and a protective carry case for safe storage & easy portability.

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Thread repair kits are used to repair stripped or damaged tapped holes on metal surfaces. They provide a strong fastener connection, preventing wear, corrosion... Read More

HELICOIL -

Thread Repair Sets

StyleModelTypeThread TypeMaterialNumber of PiecesPrice (inc. GST)
A4934Free RunningUNC304 Stainless Steel54A$ 2689.60
B4937-125Free RunningMetric Coarse304 Stainless Steel60A$ 1040.75
RFQ
C4936Free RunningUNF304 Stainless Steel60A$ 2416.00
RFQ
B4937-150Free RunningMetric Coarse304 Stainless Steel60A$ 1293.86
HELICOIL -

Pipe Thread Kits

StyleModelThread SizePrice (inc. GST)
A5407-161-11 1/2-
RFQ
B5407-81/2-14A$ 1376.32
A5407-41/4-18A$ 985.82
C5407-21/8-27A$ 817.52
A5407-123/4-14-
RFQ
D5407-63/8-18A$ 1254.99
HELICOIL -

Thread Repair Kits, UNC

StyleModelThread SizeTypeThread TypeMaterialPrice (inc. GST)
A5521-241 1/2-6Free RunningUNC304 Stainless SteelA$ 1502.80
RFQ
B5521-201 1/4-7Free RunningUNC304 Stainless SteelA$ 1434.86
RFQ
C5521-181 1/8-7Free RunningUNC304 Stainless SteelA$ 1338.19
RFQ
D5521-221 3/8-6Free RunningUNC304 Stainless Steel-
RFQ
E5521-161-8Free RunningUNC304 Stainless SteelA$ 1811.78
RFQ
F5401-81/2-13Free RunningUNCHigh Speed SteelA$ 378.30
RFQ
G5401-41/4-20Free RunningUNCHigh Speed SteelA$ 184.84
RFQ
H5401-123/4-10Free RunningUNCHigh Speed SteelA$ 462.97
RFQ
I5401-63/8-16Free RunningUNCHigh Speed SteelA$ 312.16
RFQ
H5401-044-40Free RunningUNCHigh Speed SteelA$ 379.10
RFQ
J5401-055-40Free RunningUNCHigh Speed SteelA$ 681.89
RFQ
F5401-105/8-11Free RunningUNCHigh Speed SteelA$ 375.87
RFQ
H5401-55/16-18Free RunningUNCHigh Speed SteelA$ 381.22
RFQ
K5401-066-32Free RunningUNCHigh Speed SteelA$ 374.05
RFQ
L5521-147/8-9Free RunningUNC304 Stainless SteelA$ 1144.06
RFQ
H5401-77/16-14Free RunningUNCHigh Speed SteelA$ 253.31
RFQ
M5401-28-32Free RunningUNCHigh Speed SteelA$ 375.84
RFQ
N5401-99/16-12Free RunningUNCHigh Speed SteelA$ 513.81
RFQ
O5401-310-24Free RunningUNCHigh Speed SteelA$ 377.50
RFQ
P5401-112-24Free RunningUNCHigh Speed SteelA$ 227.11
RFQ
HELICOIL -

Thread Repair Kits, UNF

StyleModelThread SizeTypeThread TypeMaterialPrice (inc. GST)
A5528-241 1/2-12Free RunningUNF304 Stainless SteelA$ 3439.55
RFQ
A5528-201 1/4-12Free RunningUNF304 Stainless SteelA$ 3095.94
RFQ
A5528-181 1/8-12Free RunningUNF304 Stainless SteelA$ 1385.93
RFQ
B5528-221 3/8-12Free RunningUNF304 Stainless Steel-
RFQ
C5528-1611-12Free RunningUNF304 Stainless SteelA$ 2083.74
RFQ
D5528-161-14Free RunningUNF304 Stainless SteelA$ 1293.84
RFQ
E5402-81/2-20Free RunningUNF304 Stainless SteelA$ 334.27
RFQ
F5402-41/4-28Free RunningUNF304 Stainless SteelA$ 396.03
RFQ
G5402-123/4-16Free RunningUNF304 Stainless SteelA$ 662.24
RFQ
H5402-63/8-24Free RunningUNF304 Stainless SteelA$ 429.60
RFQ
D5402-105/8-18Free RunningUNF304 Stainless SteelA$ 577.79
RFQ
I5402-55/16-24Free RunningUNF304 Stainless SteelA$ 416.90
RFQ
J5402-066-40Free RunningUNF304 Stainless SteelA$ 387.40
RFQ
D5528-147/8-14Free RunningUNF304 Stainless SteelA$ 1019.79
RFQ
K5402-77/16-20Free RunningUNF304 Stainless SteelA$ 452.38
RFQ
L5402-28-36Free RunningUNF304 Stainless SteelA$ 398.95
RFQ
M5402-99/16-18Free RunningUNF304 Stainless SteelA$ 823.55
RFQ
N5402-310-32Free RunningUNF304 Stainless SteelA$ 384.96
RFQ
HELICOIL -

Thread Repair Kits, Metric Coarse

StyleModelThread SizeTypeThread TypeMaterialPrice (inc. GST)
A5403-3M3 x 0.5Free RunningMetric Coarse304 Stainless SteelA$ 387.73
RFQ
B5403-3.5M3.5 x 0.6Free RunningMetric Coarse304 Stainless Steel-
RFQ
C5403-4M4 x 0.7Free RunningMetric Coarse304 Stainless SteelA$ 395.39
RFQ
D5403-5M5 x 0.8Free RunningMetric Coarse304 Stainless SteelA$ 205.28
RFQ
E5403-6M6 x 1Free RunningMetric Coarse304 Stainless SteelA$ 376.67
RFQ
B5403-7M7 x 1Free RunningMetric Coarse304 Stainless Steel-
RFQ
F5403-8M8 x 1.25Free RunningMetric Coarse304 Stainless SteelA$ 365.76
RFQ
B5403-9M9 x 1.25Free RunningMetric Coarse304 Stainless Steel-
RFQ
B5403-10M10 x 1.5Free RunningMetric Coarse304 Stainless SteelA$ 284.35
RFQ
G5403-11M11 x 1.5Free RunningMetric Coarse304 Stainless SteelA$ 299.20
RFQ
H5403-12M12 x 1.75Free RunningMetric Coarse304 Stainless SteelA$ 471.30
RFQ
I5403-14M14 x 2Free RunningMetric Coarse304 Stainless SteelA$ 498.41
RFQ
J5403-16M16 x 2Free RunningMetric Coarse304 Stainless SteelA$ 868.03
RFQ
G5403-18M18 x 2.5Free RunningMetric Coarse304 Stainless SteelA$ 680.79
RFQ
K5403-20M20 x 2.5Free RunningMetric Coarse304 Stainless SteelA$ 746.75
RFQ
HELICOIL -

Thread Repair Kits, Metric Fine

StyleModelThread SizeTypeThread TypeMaterialPrice (inc. GST)
A5404-8M8 x 1Free RunningMetric Fine304 Stainless Steel-
RFQ
A5404-10M10 x 1Free RunningMetric Fine304 Stainless SteelA$ 356.03
RFQ
A5405-10M10 x 1.25Free RunningMetric Fine304 Stainless Steel-
RFQ
A5406-12M12 x 1.5Free RunningMetric Fine304 Stainless Steel-
RFQ
B5405-12M12 x 1.25Free RunningMetric Fine304 Stainless SteelA$ 621.31
RFQ
A5406-14M14 x 1.5 , M16 x 1.5Free RunningMetric Fine304 Stainless Steel-
RFQ
A5406-16M16 x 1.5Free RunningMetric Fine304 Stainless Steel-
RFQ
A5406-18M18 x 1.5Free RunningMetric Fine304 Stainless Steel-
RFQ

Features

  • Helicoil thread repair kits are used to repair stripped threads & create new threads for fastening applications.
  • These kits include drill bits, steel taps, installation tools and Helicoil inserts.
  • Drill bits can attach to hand drills for drilling out holes of required dimensions in metallic materials.
  • Taps are used to create threadings on drilled out holes.
  • These taps are made of high-speed steel for structural strength to resist bending / breaking under harsh use.
  • Helicoil threaded inserts provide stronger threading as compared to the original tapped threaded hole, while preventing thread wear.
  • These Helicoil threaded inserts come in metric & imperial sizes, and coarse & fine variants.
  • They are made of stainless steel for corrosion resistance & durability.

Working Mechanism

  • Select a drill from Helicoil thread repair kits according to the length of Helicoil insert, screw or bolt, to drill out the damaged threading.
  • Use an appropriately sized tap (supplied with Helicoil thread repair kits) to re-thread the drilled out hole in the material.
  • Select a thread insert and use the supplied installation tool to wind the insert into the hole.
  • Use tang break-off rod or punch to remove the tang and allow free passage of bolts. Large-sized holes or spark plug inserts require long nose pliers to bend the tang in & out alternately until the tang breaks free.
  • The repaired threaded hole is ready for fastening applications.

Standards and Approvals

  • ISO 9001
  • QS 9000

Frequently Asked Questions

What are some troubleshooting solutions to Helicoil thread repair kit installation problems?

  • If there is a problem while installing a Helicoil thread insert, first match the insert with its correct tap & drill size and then check for wear on them. Helicoil thread plug gages may also be used to check the tapped holes before installing the insert.
  • If Helicoil insert installs perfectly, but there is a problem in winding the mating fastener, match the fastener's dimensions with the diameter & pitch of the installed Helicoil thread insert.

Can Helicoil inserts of Helicoil thread repair kits be removed once installed?

Yes, Helicoil offers removal tools for removing installed Helicoil inserts by attaching to them & unwinding them in direction opposite to that of installation.

What are some compatible accessories that can be used along with Helicoil thread repair kits?

Raptor Supplies offers locking thread inserts that lock a fastener once installed and prevent accidental rotational spin outs due to vibrations or torque. We also supply replacement free running inserts and compatible Helicoil repair kit components / tools for replacing old, worn-out or damaged parts and providing efficient operation.

Why are Helicoil inserts larger in diameter than the tapped hole before installation?

Diameter of Helicoil thread inserts is slightly larger than the tapped hole diameter before installation as the installation tool reduces the diameter of the leading coil when it applies torque to Helicoil insert's tang, thereby allowing the insert to enter the tapped hole. After installing Helicoil threaded insert, its high tensile stainless steel coil acts like a spring and expands outward onto the metallic material for a strong anchoring connection.

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