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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 7/8"-14 Thread Size - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 7/8"-14 Thread Size

The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 7/8"-14 thread size and 1 5/16 in overall length. Made from 18-8 metal, it features a right-hand, fine thread and a tensile strength…

SKU 3G-OTH-598971

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, 7/8"-14 Thread Size
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
K1191-14
Type
Free-Running
Overall Lg
1 5/16 in
Thread Size
7/8"-14
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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 7/8"-14 thread size and 1 5/16 in overall length. Made from 18-8 metal, it features a right-hand, fine thread and a tensile strength range of 200,000 to 250,000 psi. This plain finish insert (MPN K1191-14) is designed for inch-series applications requiring reliable thread reinforcement.

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 is used to repair or reinforce internal threads in metal components. It provides a durable, free-running thread that resists wear and corrosion, making it ideal for industrial applications like automotive, aerospace, and machinery maintenance where thread integrity is critical.

What are the specifications of the HELI-COIL K1191-14 insert?

The HELI-COIL K1191-14 is a free-running, tanged tang style insert with a 7/8"-14 fine thread, 1 5/16 in overall length, and right-hand orientation. Made from 18-8 metal, it offers a tensile strength of 200,000 to 250,000 psi and a plain finish for inch-series applications.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts like the K1191-14 to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine parts to your location. Contact us for pricing and lead time on your order.

How to install a tanged helical insert?

To install a tanged helical insert, drill the hole to the specified tap drill size, tap threads using the correct tap, then insert the coil using a tang break-off tool. After installation, break off the tang at the notch. Always follow the manufacturer's instructions for proper thread engagement and torque.

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, #4-40 Thread Size, 100 PK (MPN A1185-04CNW112). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #4-40; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #4-40 Thread Size, 100 PK (MPN A1185-04CNW112). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #4-40; 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, 1/2"-13 Thread Size, Plain, Plain, 6 PK (MPN R1185-8). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/2"-13; 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, 1/2"-13 Thread Size, Plain, Plain, 6 PK (MPN R1185-8). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/2"-13; 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, 7/8"-9 Thread Size, 1 5/16 in Overall Lg (MPN K1185-14). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 7/8"-9; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 7/8"-9 Thread Size, 1 5/16 in Overall Lg (MPN K1185-14). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 7/8"-9; 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, 9/16"-18 Thread Size, Plain, Plain, 6 PK (MPN R1191-9). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 9/16"-18; 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, 9/16"-18 Thread Size, Plain, Plain, 6 PK (MPN R1191-9). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 9/16"-18; 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, 7/16"-20 Thread Size, Plain, Plain, 6 PK (MPN R1191-7). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 7/16"-20; 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, 7/16"-20 Thread Size, Plain, Plain, 6 PK (MPN R1191-7). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 7/16"-20; 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, #4-40 Thread Size, Plain, Plain, 100 PK (MPN A1185-04CN224). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #4-40; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #4-40 Thread Size, Plain, Plain, 100 PK (MPN A1185-04CN224). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #4-40; 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, M4-0.70 Thread Size, Plain, Plain, 100 PK (MPN A1084-4CN050). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M4-0.70; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 4.2mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M4-0.70 Thread Size, Plain, Plain, 100 PK (MPN A1084-4CN050). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M4-0.70; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 4.2mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M6-1.00 Thread Size, Plain, Plain, 100 PK (MPN A1084-6EN120). 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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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M6-1.00 Thread Size, Plain, Plain, 100 PK (MPN A1084-6EN120). 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.