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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 a #2-56 thread size, right-hand coarse thread, and 18-8 material grade. It requires a 3/32 drill bit and #2-56 STI tap…

SKU 3G-OTH-527344

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
T1185-02C129S
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 a #2-56 thread size, right-hand coarse thread, and 18-8 material grade. It requires a 3/32 drill bit and #2-56 STI tap, offers tensile strength of 200,000 to 250,000 psi, and is compatible with metal. Supplied in a 1,000-pack (MPN T1185-02C129S), this inch-system insert is designed for metal applications.

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 Tangless Helical Insert used for?

A HELI-COIL Tangless Helical Insert repairs or reinforces threads in metal. It provides a durable, free-running internal thread for #2-56 fasteners, ideal for aerospace, automotive, and industrial applications where stripped or worn threads need restoration without replacing the parent component.

What are the specifications of the HELI-COIL T1185-02C129S insert?

This HELI-COIL insert is a free-running, tangless style with #2-56 thread size, right-hand coarse thread, and 18-8 stainless steel material. It requires a 3/32 drill bit and #2-56 STI tap, offers tensile strength of 200,000 to 250,000 psi, and comes in a 1,000-pack with plain finish.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the T1185-02C129S or other HELI-COIL thread repair inserts.

How to install a HELI-COIL tangless helical insert?

To install a HELI-COIL tangless insert, drill a hole using a 3/32 drill bit, tap it with a #2-56 STI tap, then use a tangless installation tool to wind the insert into the tapped hole. The tangless design eliminates the need for tang break-off, simplifying installation in metal components.

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, #2-56 Thread Size, Plain, Plain, 100 PK (MPN AT1185-02C129). 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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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, 1/4"-20 Thread Size, Plain, 1,000 PK (MPN T1185-4C500S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: 1/4"-20; 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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