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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M14-1.50 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M14-1.50 Thread Size, Plain

The HELI-COIL Helical Insert is a free-running, tanged tang style insert with an M14-1.50 metric fine thread, right-hand orientation, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8 stainless steel…

SKU 3G-OTH-599206

Also listed as: R374514 · R3745 14

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, M14-1.50 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
R3745-14
Type
Free-Running, M14-1.50 Thread Size, Plain, Plain, 6 PK

Technical Documents

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert is a free-running, tanged tang style insert with an M14-1.50 metric fine thread, right-hand orientation, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8 stainless steel, this plain finish insert comes in a 6-pack (MPN R3745-14) and is designed to repair or reinforce threads in metal substrates.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces damaged internal threads in metal substrates. This free-running, tanged tang style insert with M14-1.50 metric fine thread restores thread strength and resists wear, galling, and corrosion in industrial applications like machining, automotive, and heavy equipment.

What are the specifications of the HELI-COIL R3745-14 insert?

The HELI-COIL R3745-14 is a free-running, tanged tang style helical insert with M14-1.50 metric fine thread, right-hand orientation, and tensile strength of 200,000 to 250,000 psi. It is made from 18-8 stainless steel with plain finish, supplied in a 6-pack for metal substrate thread repair.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts like the R3745-14 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this M14-1.50 free-running insert.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged helical insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then use the installation tool to wind the insert into the thread. Break off the tang after installation for a permanent, high-strength 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 free-running tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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