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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 is a free-running, tanged tang style insert with a 5/16"-18 coarse, right-hand thread. Made from 18-8 metal, it offers a tensile strength of 200,000 to 250,000 psi and comes in a…

SKU 3G-OTH-598923

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
A1185-5CN312
Type
Free-Running, Plain, 100 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 is a free-running, tanged tang style insert with a 5/16"-18 coarse, right-hand thread. Made from 18-8 metal, it offers a tensile strength of 200,000 to 250,000 psi and comes in a 100-piece pack (MPN A1185-5CN312).

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces tapped threads in metal. This free-running, tanged tang style insert with 5/16"-18 coarse thread restores strength to stripped holes in automotive, aerospace, and industrial equipment. 3G Electric supplies these inserts globally.

What are the specifications of the HELI-COIL A1185-5CN312 insert?

This HELI-COIL insert has a 5/16"-18 coarse, right-hand thread, made from 18-8 metal with tensile strength of 200,000 to 250,000 psi. It is a free-running, plain, tanged tang style, sold in a 100-piece pack (MPN A1185-5CN312).

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. We handle full logistics and customs clearance to deliver the A1185-5CN312 100-pack of 5/16"-18 free-running tanged inserts to your facility. Contact us for pricing and lead time.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then use the tang to drive the insert into place. Break off the tang after installation. Always follow the manufacturer's instructions.

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, M4-0.70 Thread Size, Plain, Plain, 100 PK (MPN A1084-4EN040). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M4-0.70; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 4.2mm; attr798708: 200,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain, 1,000 PK (MPN 1191-4CN250S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-28; 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, 1/4"-28 Thread Size, Plain, 1,000 PK (MPN 1191-4CN250S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-28; 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, 1/4"-18 Thread Size, Plain, Plain, 12 PK (MPN R327-4). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-18; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: ANPT.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-18 Thread Size, Plain, Plain, 12 PK (MPN R327-4). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-18; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: ANPT.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M5-0.80 Thread Size, Plain, Plain, 100 PK (MPN A1084-5EN100). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M5-0.80; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 5.2mm; attr798708: 200,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M5-0.80 Thread Size, Plain, Plain, 100 PK (MPN A1084-5EN100). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M5-0.80; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 5.2mm; attr798708: 200,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size, Plain, 100 PK (MPN A1191-5CN625). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 5/16"-24; 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, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3EN090). Key specifications — attr798694: Nitronic 60; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 psi.
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