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HELI-COIL Screw-Locking Tangless Helical Insert - Screw-Locking Tangless Helical Inserts
HELI-COILScrew-Locking Tangless Helical Inserts

HELI-COIL Screw-Locking Tangless Helical Insert

The HELI-COIL Helical Insert is a screw-locking tangless helical insert in a #10-32 thread size, plain finish, supplied in a 1,000-piece pack (MPN T3591-3C190S). It is made from 18-8 material with a tensile strength…

SKU 3G-OTH-532466

Also listed as: T35913C190S · T3591 3C190S

Brand
HELI-COIL
Item
Screw-Locking Tangless Helical Insert
Category
Screw-Locking Tangless Helical Inserts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HELI-COIL
Manufacturer Part Number
T3591-3C190S
Type
Screw-Locking, #10-32 Thread Size, Plain, 1,000 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Fine
STI Tap Size
#10-32
Drill Bit Size
13/64
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch

Technical Documents

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

Product Description

The HELI-COIL Helical Insert is a screw-locking tangless helical insert in a #10-32 thread size, plain finish, supplied in a 1,000-piece pack (MPN T3591-3C190S). It is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, requires a 13/64 drill bit and #10-32 STI tap, and is compatible with metal substrates.

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, providing a durable screw-locking thread for #10-32 fasteners. It is commonly used in automotive, aerospace, and industrial maintenance applications where stripped or worn threads need restoration without replacing the parent component.

What are the specifications of the HELI-COIL T3591-3C190S insert?

The HELI-COIL T3591-3C190S is a screw-locking tangless helical insert with #10-32 thread size, plain finish, made from 18-8 stainless steel. It has a tensile strength of 200,000 to 250,000 psi, requires a 13/64 drill bit and #10-32 STI tap, and is supplied in a 1,000-piece pack.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner, we provide genuine HELI-COIL products like the T3591-3C190S to industrial buyers, ensuring compliance with international shipping requirements.

How to install a tangless helical insert?

To install a tangless helical insert, drill a hole using a 13/64 drill bit, tap it with a #10-32 STI tap, then insert the coil using a tangless installation tool. The screw-locking feature secures the fastener without a tang to break off, simplifying installation in 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 screw-locking 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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