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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-18 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-18 Thread Size, Plain

The HELI-COIL Helical Insert (MPN R1185-5) is a tanged tang style, free-running helical insert with a 5/16"-18 thread size, right-hand, coarse thread, and plain finish. Made from 18-8 stainless steel metal, it offers…

SKU 3G-OTH-598925

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, 5/16"-18 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
R1185-5
Type
Free-Running, Plain, Plain, 12 PK
Thread Size
5/16"-18
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert (MPN R1185-5) is a tanged tang style, free-running helical insert with a 5/16"-18 thread size, right-hand, coarse thread, and plain finish. Made from 18-8 stainless steel metal, it offers a tensile strength of 200,000 to 250,000 psi and comes in a 12-pack. 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 reinforces threads in metal. It is installed into a tapped hole to provide a durable 5/16"-18 free-running thread, ideal for automotive, aerospace, and industrial applications where stripped threads need restoration.

What are the specifications of the HELI-COIL R1185-5 insert?

The HELI-COIL R1185-5 is a tanged tang style, free-running helical insert with a 5/16"-18 coarse thread, right-hand orientation, and plain finish. It is made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi, supplied in a 12-pack.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies genuine HELI-COIL helical inserts worldwide. We handle full logistics and customs clearance to deliver the R1185-5 and other industrial parts across 14 departments, including specialist expertise in combustion, pumps, and controls.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged insert, drill and tap the hole to the specified size, then use a tang break-off tool to insert the coil. After installation, break off the tang with a punch. Ensure the hole is clean and lubricated for proper seating.

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, M8-1.25 Thread Size, Plain, Plain, 100 PK (MPN A1084-8EN240). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M8-1.25; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 8.3mm; attr798708: 200,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M8-1.25 Thread Size, Plain, Plain, 100 PK (MPN A1084-8EN240). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M8-1.25; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 8.3mm; attr798708: 200,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #10-32 Thread Size, 100 PK (MPN A1191-3CNW285). 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, #10-32 Thread Size, 100 PK (MPN A1191-3CNW285). 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.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #10-32 Thread Size, Plain, 1,000 PK (MPN 1191-3CN380S). 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.
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #10-32 Thread Size, Plain, 1,000 PK (MPN 1191-3CN380S). 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.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3CN090). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3CN090). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #2-56 Thread Size, Plain, Plain, 1,000 PK (MPN 1185-02CN086S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #2-56; 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, #2-56 Thread Size, Plain, Plain, 1,000 PK (MPN 1185-02CN086S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #2-56; 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, M3-0.50 Thread Size, Plain, 1,000 PK (MPN 1084-3CN060S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, 1,000 PK (MPN 1084-3CN060S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M2.5-0.45 Thread Size, Plain, 100 PK (MPN A1084-2.5CN025). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M2.5-0.45; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 2.55mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M2.5-0.45 Thread Size, Plain, 100 PK (MPN A1084-2.5CN025). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M2.5-0.45; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 2.55mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 3/8"-16 Thread Size, Plain, Plain, 12 PK (MPN R1185-6). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 3/8"-16; 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, 3/8"-16 Thread Size, Plain, Plain, 12 PK (MPN R1185-6). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 3/8"-16; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.