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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain

The HELI-COIL Helical Insert (MPN R1185-4) is a tanged tang style, free-running helical insert made of 18-8 metal. It features a 1/4"-20 inch coarse thread, right-hand orientation, and a tensile strength range of…

SKU 3G-OTH-598910

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
R1185-4
Type
Free-Running, Plain, Plain, 12 PK
Thread Size
1/4"-20
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert (MPN R1185-4) is a tanged tang style, free-running helical insert made of 18-8 metal. It features a 1/4"-20 inch coarse thread, right-hand orientation, and a tensile strength range of 200,000 to 250,000 psi, supplied in a 12-pack with a plain finish.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal components. It provides a durable, free-running internal thread for fasteners, commonly used in automotive, aerospace, and industrial maintenance applications where stripped or worn threads need restoration.

What are the specifications of the HELI-COIL R1185-4 insert?

The HELI-COIL R1185-4 is a tanged, free-running helical insert with a 1/4"-20 inch coarse thread, right-hand orientation, made of 18-8 metal. It has a tensile strength of 200,000 to 250,000 psi and comes in a 12-pack with a plain finish.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver the R1185-4 and other thread repair inserts to your facility, ensuring compliance with international shipping requirements.

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 tapped hole. Break off the tang after installation for a permanent thread.

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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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M2.5-0.45 Thread Size, Plain, 100 PK (MPN A1084-2.5EN025). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M2.5-0.45; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 2.55mm; attr798708: 200,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain, 1,000 PK (MPN 1185-4CN250S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-20; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain, 1,000 PK (MPN 1185-4CN250S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-20; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M10-1.50 Thread Size, Plain, 100 PK (MPN A1084-10CN150). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M10-1.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 10.5mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M10-1.50 Thread Size, Plain, 100 PK (MPN A1084-10CN150). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M10-1.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 10.5mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M2.2-0.45 Thread Size, Plain, 100 PK (MPN A1084-2.2CN044). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M2.2-0.45; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 2.3mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #10-32 Thread Size, 1,000 PK (MPN 1191-3CNW190S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #10-32; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Fine.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #6-32 Thread Size, 1,000 PK (MPN 1185-06CNW207S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #6-32; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M6-1.00 Thread Size, Plain, Plain, 100 PK (MPN A1084-6EN150). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M6-1.00; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 6.25mm; attr798708: 200,000 psi.
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