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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 4 Inserts, 60 Pieces - Helical Insert Assortments
HELI-COILHelical Insert Assortments

HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 4 Inserts, 60 Pieces

The HELI-COIL Thread Repair Kit (MPN 4937-125) is a tanged tang style, free-running helical insert assortment containing 4 inserts and 60 pieces across 3 sizes. It features an M8-1.25 STI tap size, coarse right-hand…

SKU 3G-OTH-526543

Brand
HELI-COIL
Item
Thread Repair Kit: Tanged Tang Style, Free-Running, 4 Inserts, 60 Pieces
Category
Helical Insert Assortments
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Technical Specifications

HELI-COIL
Manufacturer Part Number
4937-125
Type
Free-Running, 3 # of Sizes
Pieces
60
Inserts
4
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
M8-1.25
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
Insert Types Included
Helical Inserts
System of Measurement
Metric
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Thread Repair Kit (MPN 4937-125) is a tanged tang style, free-running helical insert assortment containing 4 inserts and 60 pieces across 3 sizes. It features an M8-1.25 STI tap size, coarse right-hand threads, and 18-8 material grade, designed for metal compatibility in metric systems.

Frequently Asked Questions

What is the HELI-COIL Thread Repair Kit 4937-125 used for?

The HELI-COIL Thread Repair Kit 4937-125 is used to restore damaged internal threads in metal components. It includes 60 helical inserts across 3 sizes, an M8-1.25 STI tap, and is designed for free-running, coarse right-hand thread repairs in metric systems.

What are the specifications of the HELI-COIL Thread Repair Kit 4937-125?

The kit includes 4 inserts and 60 pieces total, with an M8-1.25 STI tap size, coarse right-hand threads, and 18-8 material grade. It is a tanged tang style, free-running helical insert assortment for metal compatibility in metric systems.

Where to buy the HELI-COIL Thread Repair Kit 4937-125 worldwide?

3G Electric supplies the HELI-COIL Thread Repair Kit 4937-125 worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this kit to your facility, ensuring you get the right thread repair solution for your application.

How to install the HELI-COIL Thread Repair Kit 4937-125?

To install, drill out the damaged thread to the specified size, tap the hole using the included M8-1.25 STI tap, then insert the helical insert using a tang-style installation tool. Ensure the insert is fully seated below the surface for a secure, free-running repair.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-COIL Products

3G Electric supplies HELI-COIL helical insert assortments. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, Stainless Steel, Plain, Plain, 6 PK (MPN R474-4). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: M10-1.00; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, Stainless Steel, Plain, Plain, 6 PK (MPN R474-4). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: M10-1.00; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
HELI-COIL Helical Insert: Free-Running, Steel, Black Oxide, Steel, Black Oxide, 6 PK (MPN R5326-14L-6). Key specifications — Material Grade/Class: 12L14; Thread Direction: Right Hand; STI Tap Size: M14-1.25; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
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HELI-COIL Helical Insert: Free-Running, Steel, Black Oxide, Steel, Black Oxide, 6 PK (MPN R5326-14L-6). Key specifications — Material Grade/Class: 12L14; Thread Direction: Right Hand; STI Tap Size: M14-1.25; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 4 Inserts, 60 Pieces, 3 # of Sizes (MPN 4937-150). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M5-0.80; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Coarse.
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