Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
HELI-COIL Free-Running Tanged Helical Insert, 1/4"-20, Plain, 1000 PK - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Free-Running Tanged Helical Insert, 1/4"-20, Plain, 1000 PK

HELI-COIL Helical Insert: Tanged Tang Style, a free-running tanged helical insert with 1/4"-20 thread size, plain finish, and 18-8 metal construction. Supplied in a 1,000-piece pack, it features right-hand, coarse…

SKU 3G-OTH-598913

Also listed as: 11854CN375S · 1185 4CN375S

Brand
HELI-COIL
Item
Free-Running Tanged Helical Insert, 1/4"-20, Plain, 1000 PK
Part Number
1185-4CN375S
Category
Free-Running Tanged Helical Inserts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HELI-COIL
Manufacturer Part Number
1185-4CN375S
Type
Free-Running, Plain, 1,000 PK
Thread Size
1/4"-20

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

HELI-COIL Helical Insert: Tanged Tang Style, a free-running tanged helical insert with 1/4"-20 thread size, plain finish, and 18-8 metal construction. Supplied in a 1,000-piece pack, it features right-hand, coarse threads and a tensile strength range of 200,000 to 250,000 psi. 3G Electric interprets customer demand and delivers genuine industrial equipment across 14 departments—and far more—with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or strengthens threads in metal. This tanged, free-running insert with 1/4"-20 coarse threads provides a durable 18-8 stainless steel thread for applications requiring tensile strength up to 250,000 psi. 3G Electric supplies these inserts across 14 industrial departments worldwide.

What are the specifications of HELI-COIL 1185-4CN375S?

This HELI-COIL insert has a 1/4"-20 thread size, right-hand coarse threads, plain finish, and 18-8 metal construction. It offers a tensile strength range of 200,000 to 250,000 psi and comes in a 1,000-piece pack. 3G Electric sources genuine HELI-COIL inserts for global delivery.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we interpret demand and deliver genuine parts like the 1185-4CN375S across 14 departments. Contact us for availability and delivery to your location.

How to install a tanged helical insert?

Install a tanged HELI-COIL insert by drilling to the specified tap drill size, tapping the hole with the correct tap, then using a tang installation tool to wind the insert into the thread. After installation, break off the tang with a punch. 3G Electric provides genuine inserts for reliable 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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from HELI-COIL

View all HELI-COIL parts
Free-running helical insert with tanged tang for M8-1.25 coarse metric threads. Made of Nitronic 60 metal, plain finish. Supplied in a 100-piece pack. Used to repair or reinforce internal threads in metal components
HELI-COIL
Free-running helical insert with tanged tang for M8-1.25 coarse metric threads. Made of Nitronic 60 metal, plain finish. Supplied in a 100-piece pack. Used to repair or reinforce internal threads in metal components
Free-running helical insert with tanged tang for installation. Thread size 1/4"-20, coarse right-hand thread, plain finish. Supplied in a 100-piece pack. Used to repair or reinforce tapped threads in metal components
HELI-COIL
Free-running helical insert with tanged tang for installation. Thread size 1/4"-20, coarse right-hand thread, plain finish. Supplied in a 100-piece pack. Used to repair or reinforce tapped threads in metal components
Free-running helical insert with tanged tang for M12-1.75 coarse metric threads. Made of 18-8 stainless steel with tensile strength 200,000–250,000 psi, 12.5mm length, plain finish. Used to repair or reinforce tapped threads in metal components, restoring thread integrity in automotive, aerospace, and industrial applications
HELI-COIL
Free-running helical insert with tanged tang for M12-1.75 coarse metric threads. Made of 18-8 stainless steel with tensile strength 200,000–250,000 psi, 12.5mm length, plain finish. Used to repair or reinforce tapped threads in metal components, restoring thread integrity in automotive, aerospace, and industrial applications
Free-running tanged helical insert for M4-0.70 coarse metric threads. Made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Requires a 4.2 mm drill size. Supplied in a plain finish, 100-piece pack. Used to repair or reinforce tapped threads in metal components
HELI-COIL
Free-running tanged helical insert for M4-0.70 coarse metric threads. Made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Requires a 4.2 mm drill size. Supplied in a plain finish, 100-piece pack. Used to repair or reinforce tapped threads in metal components
Free-running helical insert with tanged tang for installation. M4-0.70 thread size, right-hand orientation, coarse pitch. Made from 18-8 stainless steel, plain finish. Supplied in 1,000-piece pack. Used to repair or reinforce tapped threads in metal components
HELI-COIL
Free-running helical insert with tanged tang for installation. M4-0.70 thread size, right-hand orientation, coarse pitch. Made from 18-8 stainless steel, plain finish. Supplied in 1,000-piece pack. Used to repair or reinforce tapped threads in metal components
Free-running helical insert with tanged tang for thread repair or reinforcement in metal components. Made from 18-8 stainless steel, M4-0.70 metric coarse thread, right-hand orientation, plain finish. Requires 4.2mm drill size. Supplied in a 100-piece pack
HELI-COIL
Free-running helical insert with tanged tang for thread repair or reinforcement in metal components. Made from 18-8 stainless steel, M4-0.70 metric coarse thread, right-hand orientation, plain finish. Requires 4.2mm drill size. Supplied in a 100-piece pack
Free-running tanged helical insert for repairing or reinforcing threads in metal components. #4-40 thread size, right-hand coarse thread, plain finish. Supplied in a 100-piece pack. Suitable for use in aluminum, cast iron, or steel
HELI-COIL
Free-running tanged helical insert for repairing or reinforcing threads in metal components. #4-40 thread size, right-hand coarse thread, plain finish. Supplied in a 100-piece pack. Suitable for use in aluminum, cast iron, or steel
Free-running helical insert with tanged tang for installation. M8-1.25 thread size, right-hand orientation, coarse pitch. Made from Nitronic 60 metal with 200,000 psi tensile strength. Supplied in a 100-piece pack. Used to repair or reinforce tapped threads in metal components
HELI-COIL
Free-running helical insert with tanged tang for installation. M8-1.25 thread size, right-hand orientation, coarse pitch. Made from Nitronic 60 metal with 200,000 psi tensile strength. Supplied in a 100-piece pack. Used to repair or reinforce tapped threads in metal components

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first