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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 7/16"-20 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 7/16"-20 Thread Size, Plain

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running Tanged Helical Inserts, 7/16"-20 thread size, 18-8 metal, right-hand, fine thread, plain finish, 6-pack (MPN R1191-7). Tensile strength 200,000 to 250,000 psi.

SKU 3G-OTH-598946

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, 7/16"-20 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
R1191-7
Type
Free-Running, Plain, Plain, 6 PK
Thread Size
7/16"-20
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running Tanged Helical Inserts, 7/16"-20 thread size, 18-8 metal, right-hand, fine thread, plain finish, 6-pack (MPN R1191-7). Tensile strength 200,000 to 250,000 psi.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 is used across industrial sectors including machining, power transmission, and hydraulics to restore stripped threads or strengthen connections in softer materials like aluminum.

What are the specifications of the HELI-COIL R1191-7 insert?

The HELI-COIL R1191-7 is a free-running tanged helical insert with a 7/16"-20 fine thread, right-hand orientation, and plain finish. It is made from 18-8 metal with a tensile strength of 200,000 to 250,000 psi. Supplied in a 6-pack.

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 genuine HELI-COIL products to your facility, regardless of location.

How to install a HELI-COIL tanged helical insert?

Installation requires drilling the damaged thread to the specified tap drill size, tapping with a HELI-COIL tap, then winding the insert onto a tang installation tool until it is below the surface. Break off the tang with a punch. Always follow the manufacturer's instructions for thread size and tooling.

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, #8-32 Thread Size, Plain, Plain, 1,000 PK (MPN 1185-2CN246S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #8-32; 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, #8-32 Thread Size, Plain, Plain, 1,000 PK (MPN 1185-2CN246S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #8-32; 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, M5-0.80 Thread Size, Plain, Plain, 12 PK (MPN R1084-5). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M5-0.80; attr798676: Metal; attr798705: Metric; 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, M5-0.80 Thread Size, Plain, Plain, 12 PK (MPN R1084-5). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M5-0.80; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M5-0.80 Thread Size, Plain, Plain, 100 PK (MPN A1084-5EN125). 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 A1084-5EN125). 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, 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"-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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