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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #2-56 Thread Size, Plain - Free-Running Tangless Helical Inserts
HELI-COILFree-Running Tangless Helical Inserts

HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #2-56 Thread Size, Plain

The HELI-COIL Helical Insert (Tangless Tang Style) is a free-running, plain-finish insert with #2-56 thread size, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000 PK, it…

SKU 3G-OTH-527314

Brand
HELI-COIL
Item
Helical Insert: Tangless Tang Style, Free-Running, #2-56 Thread Size, Plain
Category
Free-Running Tangless Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
T1185-02C172S
Type
Free-Running, #2-56 Thread Size, Plain, 1,000 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#2-56
Drill Bit Size
3/32
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch
View Full Spec Sheet

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert (Tangless Tang Style) is a free-running, plain-finish insert with #2-56 thread size, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000 PK, it requires a 3/32 drill bit and STI tap size #2-56, compatible with metal substrates. 3G Electric interprets demand and delivers this genuine industrial insert across 14 departments—with specialist depth in combustion, pumps, and controls—ensuring you get the right answer, not a warehouse guess.

Frequently Asked Questions

What is a HELI-COIL Tangless Helical Insert used for?

A HELI-COIL Tangless Helical Insert repairs or reinforces threads in metal substrates. It provides a free-running, high-strength thread for #2-56 fasteners, ideal for aerospace, automotive, and industrial assemblies where thread integrity is critical.

What are the specifications of the HELI-COIL T1185-02C172S insert?

This HELI-COIL insert is free-running, tangless, with #2-56 thread size, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. It requires a 3/32 drill bit and STI tap size #2-56. Supplied in a 1,000 PK with plain finish.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies genuine HELI-COIL helical inserts worldwide. We interpret your demand, source the correct part, and handle logistics and customs for delivery globally. Contact us for availability and lead time on the T1185-02C172S or other thread sizes.

How to install a HELI-COIL Tangless Helical Insert?

Drill a hole using a 3/32 drill bit, tap it with an STI tap size #2-56, then install the insert using a tangless installation tool. The tangless design eliminates the need for tang break-off. Follow HELI-COIL's generic best practices for metal substrates.

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 tangless 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: Tangless Tang Style, Free-Running, #10-32 Thread Size, Plain, 100 PK (MPN AT1191-3C190). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #10-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #4-40 Thread Size, Plain, Plain, 100 PK (MPN AT1185-04C224). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #4-40; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Coarse.
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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #4-40 Thread Size, Plain, Plain, 100 PK (MPN AT1185-04C224). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #4-40; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Coarse.
HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #2-56 Thread Size, Plain, 1,000 PK (MPN T1185-02C086S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #2-56; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Drill Bit Size: 3/32; Tensile Strength: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #10-24 Thread Size, Plain, 100 PK (MPN AT1185-3C380). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #10-24; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Coarse.
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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, 1/4"-28 Thread Size, Plain, 100 PK (MPN AT1191-4C500). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: 1/4"-28; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, 1/4"-28 Thread Size, Plain, 100 PK (MPN AT1191-4C500). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: 1/4"-28; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #2-56 Thread Size, Plain, Plain, 100 PK (MPN AT1185-02C086). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #2-56; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Coarse.
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