We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M10-1.00 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M10-1.00 Thread Size, Plain

The HELI-COIL Helical Insert (MPN R4255-10) is a free-running, tanged tang style insert with an M10-1.00 fine, right-hand thread. Made from 18-8 metal, it offers a tensile strength of 200,000 to 250,000 psi and comes…

SKU 3G-OTH-599136

Also listed as: R425510 · R4255 10

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, M10-1.00 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HELI-COIL
Manufacturer Part Number
R4255-10
Type
Free-Running, M10-1.00 Thread Size, Plain, Plain, 12 PK

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The HELI-COIL Helical Insert (MPN R4255-10) is a free-running, tanged tang style insert with an M10-1.00 fine, right-hand thread. Made from 18-8 metal, it offers a tensile strength of 200,000 to 250,000 psi and comes in a 12-pack. 3G Electric interprets your demand for thread repair or reinforcement, sources this genuine HELI-COIL product, and supports your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs stripped or damaged threads in metal components or reinforces threads in softer materials. This M10-1.00 free-running tanged insert provides a strong, wear-resistant thread for applications requiring high tensile strength up to 250,000 psi.

What are the specifications of the HELI-COIL R4255-10 insert?

The HELI-COIL R4255-10 is a free-running tanged helical insert with M10-1.00 fine, right-hand threads. It is made from 18-8 metal, offers a tensile strength of 200,000 to 250,000 psi, and comes in a 12-pack. The insert is plain finish and metric.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies genuine HELI-COIL helical inserts like the R4255-10 to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us to source this product for your thread repair or reinforcement application.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged helical insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then use the installation tool to wind the insert into the tapped hole. Break off the tang after installation for a permanent thread.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from HELI-COIL

View all HELI-COIL parts
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain, 1,000 PK (MPN 1191-4CN250S)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain, 1,000 PK (MPN 1191-4CN250S)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M4-0.70 Thread Size, Plain, Plain, 100 PK (MPN A1084-4EN040)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M4-0.70 Thread Size, Plain, Plain, 100 PK (MPN A1084-4EN040)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-18 Thread Size, Plain, Plain, 12 PK (MPN R327-4)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-18 Thread Size, Plain, Plain, 12 PK (MPN R327-4)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M5-0.80 Thread Size, Plain, Plain, 100 PK (MPN A1084-5EN100)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M5-0.80 Thread Size, Plain, Plain, 100 PK (MPN A1084-5EN100)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size, Plain, 100 PK (MPN A1191-5CN625)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size, Plain, 100 PK (MPN A1191-5CN625)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M10-1.25 Thread Size, Plain, Plain, 12 PK (MPN R4649-10)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M10-1.25 Thread Size, Plain, Plain, 12 PK (MPN R4649-10)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3EN090)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3EN090)
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M6-1.00 Thread Size, Plain, Plain, 12 PK (MPN R1084-6)
HELI-COIL
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M6-1.00 Thread Size, Plain, Plain, 12 PK (MPN R1084-6)