What thread size and standard does this fitting nut use?

This kit includes M2, M2.5, M3, M4, and M5 metric thread sizes. The inserts are designed for use with standard pilot holes in thermoplastics and create internal threads for M-series screws. Always ensure your pilot hole is slightly smaller than the insert's outer diameter for a secure fit.

Are these brass threaded inserts healthy?

These inserts are made from lead-free brass, which is considered safe for general use and does not contain harmful lead content. They are suitable for a wide range of applications including electronics, toys, and general plastic assembly where a safe and durable thread is required.

How to choose the right nut insert size?

The kit provides M2, M2.5, M3, M4, and M5 sizes. Choose the size based on the screw you intend to use and the thickness of your plastic part. For example, M2 inserts are for smaller screws and thinner materials, while M5 is for larger screws and thicker applications. Refer to your project's design specifications.

How to use FFVRVSS brass threaded inserts?

Heat a soldering iron to 200-250°C for PLA or 350-400°C for PETG/ABS. Press the insert straight into a pilot hole until flush, holding steady for 3-5 seconds while the plastic cools and locks it in place. Ensure the pilot hole is slightly smaller than the insert's outer diameter.

What is the best nut insert for 3D printing?

For 3D printing, brass threaded inserts with spiral knurling like the FFVRVSS kit are highly recommended. They offer superior torque resistance and pull-out strength compared to straight-thread inserts, ensuring durable and reusable threads in PLA, PETG, and ABS plastics.

Can I use these nut inserts daily?

Yes, these brass threaded inserts are designed for repeated use. Their durable brass construction and strong grip ensure that threads remain intact even after multiple insertions and removals, making them suitable for daily assembly or frequent adjustments in projects.

What are the side effects of using brass threaded inserts?

There are no significant side effects associated with using lead-free brass threaded inserts in plastic applications. They are designed to enhance the structural integrity of 3D printed parts by providing robust metal threads, preventing the common issue of stripped plastic screw holes.

What are the benefits of brass threaded inserts?

Brass threaded inserts offer excellent thermal conductivity for easy installation, corrosion resistance, and superior strength. The spiral knurling provides high torque resistance and pull-out strength, creating durable, reusable threads in plastics for electronics, enclosures, and repairs.

FFVRVSS Brass Threaded Inserts M2-M5 Kit | 3D Printing Nuts for PLA PETG ABS

Name: FFVRVSS Brass Threaded Inserts Kit M2-M5 (320+6 pcs) | Heat Set for 3D Printing & Plastics
Brand: FFVRVSS
SKU: daj7250
Price: 1451.00 INR
Availability: InStock

About this item

FFVRVSS Brass Threaded Inserts Kit provides 320+6 pieces of M2, M2.5, M3, M4, and M5 lead-free brass inserts, designed to add strong, reusable metal threads to 3D printed parts. This comprehensive kit includes 5 heat-set tips and a soldering iron tip adapter, making installation straightforward for makers and hobbyists working with thermoplastics like PLA, PETG, and ABS. The 45-degree opposing spiral knurling ensures superior torque resistance and pull-out strength compared to standard straight-thread inserts.

Installation is simple: heat your soldering iron to the appropriate temperature (200-250°C for PLA, 350-400°C for PETG/ABS), press the insert into a pre-drilled pilot hole until flush, and hold for 3-5 seconds while the plastic cools and locks it in place. The built-in guide eliminates the need for countersinking. This kit is perfect for electronics enclosures, circuit board mounting, toy assembly, and furniture repair, offering a reliable connection solution.

Imported directly from authorized US retailers, this kit offers superior quality and durability compared to many local alternatives. All customs duties and GST are pre-paid and included in the final price. Delivery is handled via ExpressBox, with transit times typically ranging from 12-14 days. Each size is neatly organized in a labeled compartment within a sturdy storage case.

Key Features

ALL-IN-ONE 3D PRINTING KIT — 320Pcs lead-free brass threaded inserts (M2, M2.5, M3, M4, M5) + 5 heat-set tips & 1 soldering iron adapter. Includes the most-used, data-selected sizes to create strong, reusable threads in PLA, PETG, ABS, TPU, and other plastics. Everything you need comes neatly organized in a labeled storage case—no separate purchases required
PREMIUM LEAD-FREE BRASS — High-quality lead-free brass with excellent thermal conductivity and corrosion resistance. Withstands above 300°C/572°F. Clean, precise threads resist stripping, breaking, and deformation for reliable long-term use
BUILT FOR MAKERS AND HOBBYISTS — Designed for 3D printing enthusiasts, prototypers, and DIY repair. Works with all thermoplastics including PLA, PETG, ABS, PPS, and PP. Ideal for electronics, toys, furniture, automotive casings, and laptop housings
45-DEGREE SPIRAL KNURLING — Opposing spiral knurling delivers high torque resistance and pull-out strength vs straight-thread inserts. Built-in guide means no countersinking - just heat with a soldering iron and press in for a firm, permanent hold
ORGANIZED AND READY TO USE — Each size in its own labeled compartment for quick access. Includes 5 heat-set tips (M2-M5) and 1 iron adapter. Compact sturdy case fits any toolbox. Backed by strict quality inspection and responsive customer support

Why choose this product

Precision Engineering for Stronger Prints

FFVRVSS brass threaded inserts are crafted from lead-free brass with excellent thermal conductivity and corrosion resistance, capable of withstanding temperatures over 300°C. The precise 45-degree spiral knurling design ensures a significantly stronger grip and higher pull-out strength compared to standard straight-thread inserts. This means your 3D printed parts will have durable, reliable, and reusable metal threads, ideal for electronics enclosures, circuit boards, and furniture assembly where repeated screw insertions are common. Unlike generic local options, these inserts are built for longevity and performance.

Ideal for Makers, Who Should Consider Alternatives

This kit is perfect for 3D printing enthusiasts, prototypers, and DIY repairers working with PLA, PETG, ABS, PPS, and PP thermoplastics. If you need to add robust, removable threaded connections to plastic components, this comprehensive set is an excellent choice. However, if your project involves extremely high-pressure hydraulic systems or requires specialized thread standards beyond M2-M5 metric, you may need industrial-grade fittings designed for those specific applications. For simple plastic-to-metal threading in hobbyist projects, this kit is ideal.

How to use

Print or drill a pilot hole in your plastic part. The hole diameter should be slightly smaller than the outer diameter of the brass insert you intend to use for a snug fit. — Prepare Pilot Hole
Attach the appropriate heat-set tip (M2-M5) to your soldering iron. Heat the iron to the recommended temperature: 200-250°C for PLA, or 350-400°C for PETG/ABS and other high-temperature plastics. — Heat Soldering Iron
Align the brass insert with the pilot hole and press it straight down using the heated soldering iron. Ensure the insert goes in flush with the plastic surface. Hold steady for 3-5 seconds. — Press Insert into Hole
Once the insert is pressed in and flush, hold it steady while the surrounding plastic cools and solidifies. This process locks the insert firmly in place, creating a permanent, strong metal thread. — Allow Plastic to Cool

Example scenarios

Typical situations where FFVRVSS Brass Threaded Inserts Kit M2-M5 (320+6 pcs) | Heat Set for 3D Printing & Plastics helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

A maker in Chennai needs to assemble a custom electronics enclosure for a project, requiring secure mounting points for circuit boards and external connectors.

How this product helps

Using the FFVRVSS M2 and M3 brass inserts, they can create strong, reusable threaded holes in their 3D printed enclosure. This ensures components are securely fastened and can be easily removed or replaced if needed, unlike stripped plastic threads.

Scenario 2

Illustrative example

Where it helps

A hobbyist in Delhi is repairing a broken plastic casing on a laptop or toy and needs to re-establish stripped screw holes for a durable repair.

How this product helps

The FFVRVSS kit's M2.5 and M3 inserts can be heat-set into the damaged plastic. This provides robust metal threads, restoring the original screw-holding capability and ensuring the repaired item is as sturdy as new, preventing further damage.

Specifications & installation

Specifications

Primary Material	Lead-Free Brass
Temperature Resistance	Above 300°C (572°F)

Installation & usage

Thread Sizes Included	M2, M2.5, M3, M4, M5
Total Pieces	326 (320 inserts + 6 tools)
Compatible Thermoplastics	PLA, PETG, ABS, PPS, PP, TPU
Installation Method	Heat-set with soldering iron (200-400°C)
Cost per piece (approx.)	₹4.45 per piece

How we compare

Feature	FFVRVSS Brass Threaded	Others
Material	Premium Lead-Free Brass with excellent thermal conductivity and corrosion resistance.	Varies; may include brass, aluminum, or lower-grade alloys. Quality and lead content can differ.
Grip & Strength	45° opposing spiral knurling for superior torque resistance and pull-out strength.	Often straight-thread or less aggressive knurling, leading to lower torque resistance and potential stripping.
Installation Ease	Built-in guide, no countersinking needed; heat-set with soldering iron.	May require separate countersinking or specialized tools; installation process can be more complex.
Kit Inclusions	320 inserts (M2-M5) + 5 heat-set tips + 1 soldering iron adapter in organized case.	Often sold as inserts only, requiring separate purchase of tips and adapters; organization may be basic.
Cost per Piece	Approx. ₹4.45 per piece for the complete kit.

SKU	daj7250
Brand	FFVRVSS
Material	Lead-Free Brass
Color	Brass Color
Finish Type	Brushed
Item Shape	Hexagonal
Thread Style	Left Hand
Thread Coverage	Fully Threaded
Thread Class	Class 2A
Item Dimensions (Case)	4.2 x 4.2 x 0.65 inches (10.7 x 10.7 x 1.7 cm)
Package Weight	0.132 kg (0.29 lbs)
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers

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FFVRVSS Brass Threaded Inserts Kit M2-M5 (320+6 pcs) | Heat Set for 3D Printing & Plastics

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