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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, Stainless Steel, Plain - Helical Insert Assortments
HELI-COILHelical Insert Assortments

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, Stainless Steel, Plain

The HELI-COIL Helical Insert (MPN R474-4) is a tanged tang style, free-running insert made from 18-8 stainless steel with a plain finish. This 6-pack assortment features a fine M10-1.00 metric thread, right-hand…

SKU 3G-OTH-526541

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, Stainless Steel, Plain
Category
Helical Insert Assortments
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Technical Specifications

HELI-COIL
Manufacturer Part Number
R474-4
Type
Free-Running, Stainless Steel, Plain, Plain, 6 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Fine
STI Tap Size
M10-1.00
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Metric
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert (MPN R474-4) is a tanged tang style, free-running insert made from 18-8 stainless steel with a plain finish. This 6-pack assortment features a fine M10-1.00 metric thread, right-hand direction, and a tensile strength of 200,000 to 250,000 psi, designed for use with metal materials.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal. This free-running, tanged tang style insert (MPN R474-4) provides strong, wear-resistant M10-1.00 fine threads in applications like automotive, aerospace, and industrial equipment, restoring stripped holes or strengthening soft materials.

What are the specifications of the HELI-COIL R474-4 insert?

The HELI-COIL R474-4 is a 6-pack of tanged, free-running helical inserts made from 18-8 stainless steel with a plain finish. It has a fine M10-1.00 metric thread, right-hand direction, STI tap size M10-1.00, and tensile strength of 200,000 to 250,000 psi, for use in metal.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts like the R474-4 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this 6-pack of M10-1.00 free-running inserts for your application.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged insert, drill the hole to the specified size, tap it using the correct STI tap (M10-1.00 for this insert), then use a tang break-off tool to drive the insert into the tapped hole. After installation, break off the tang with a punch for a permanent thread 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 Thread Repair Kit: Tanged Tang Style, Free-Running, 4 Inserts, 60 Pieces, 3 # of Sizes (MPN 4937-125). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M8-1.25; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Coarse.
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HELI-COIL Thread Repair Kit: 6 Inserts, 60 Pieces, 3 # of Sizes, Tanged Tang Style, Free-Running (MPN 4936). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1/4"-28; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Fine.
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HELI-COIL Thread Repair Kit: 6 Inserts, 60 Pieces, 3 # of Sizes, Tanged Tang Style, Free-Running (MPN 4936). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1/4"-28; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; 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.
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