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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #4-40 Thread Size - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #4-40 Thread Size

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert for #4-40 coarse threads, supplied in a 100-piece pack (MPN A3585-04CN112). It is made from 18-8 stainless steel with a dry film lubricant…

SKU 3G-OTH-528927

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Screw-Locking, #4-40 Thread Size
Category
Screw-Locking Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
A3585-04CN112
Type
Screw-Locking, #4-40 Thread Size, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
Thread Type
Coarse
STI Tap Size
#4-40
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert for #4-40 coarse threads, supplied in a 100-piece pack (MPN A3585-04CN112). It is made from 18-8 stainless steel with a dry film lubricant finish, offers a tensile strength of 200,000 to 250,000 psi, and is compatible with metal substrates. This inch-system insert requires an STI tap size of #4-40 and features right-hand thread direction.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces internal threads in metal. This screw-locking, tanged tang-style insert for #4-40 coarse threads provides a strong, wear-resistant thread in aluminum, cast iron, or steel, preventing stripping and extending component life.

What are the specifications of the HELI-COIL A3585-04CN112 insert?

This HELI-COIL insert has a #4-40 coarse thread, right-hand direction, and requires an STI tap size of #4-40. It is made from 18-8 stainless steel with a dry film lubricant finish, offers a tensile strength of 200,000 to 250,000 psi, and comes in a 100-piece pack.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver the A3585-04CN112 screw-locking insert to your facility. Contact us for pricing and lead time.

How to install a HELI-COIL tanged tang-style insert?

Install a HELI-COIL tanged insert by drilling to the specified hole size, tapping with the correct STI tap (#4-40 for this insert), then using a tang-style installation tool to wind the insert into the tapped hole. After installation, break off the tang with a punch.

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 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, Screw-Locking, M3-0.50 Thread Size, Plain, 1,000 PK (MPN 4184-3CN045S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: M3-0.50; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Drill Bit Size: 3.15mm; Tensile Strength: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 3/8"-16 Thread Size, Plain, 100 PK (MPN A3585-6CN562). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: 3/8"-16; 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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