335/360-Pc Brass Threaded Insert Set M2–M6 for Plastic

335/360-Piece Brass Knurled Threaded Insert Set – M2 to M6

Upgrade your projects with this comprehensive brass threaded insert kit, featuring 335 or 360 knurled inserts spanning M2 through M6 sizes. Crafted from durable copper alloy, these inserts deliver a secure, long-lasting hold in plastic components, 3D-printed parts, and electronic enclosures — all in one organized sorting box.

Why Choose This Threaded Insert Set?

• Premium Copper Alloy Construction: Solid brass material provides excellent corrosion resistance and mechanical strength for a dependable, lasting hold in any plastic or composite substrate.
• Knurled Outer Profile: The precision knurling pattern grips the surrounding material firmly during heat-set or press-fit installation, preventing pull-out and rotation.
• Wide Size Range (M2 to M6): Includes multiple metric thread sizes to cover a broad variety of fastening needs — from compact electronics to larger structural plastic assemblies.
• 335 or 360-Piece Count Options: Two quantity options let you choose the right pack size for your project scale, whether you're a hobbyist or a professional technician.
• Two Insert Styles Included: Choose from the two available knurled designs to match your specific application or installation method.
• Organized Sorting Box: Every insert is stored in a clearly compartmentalized case, keeping all sizes accessible and your workspace tidy.
• Versatile Applications: Ideal for 3D printing enthusiasts, electronics repair technicians, engineers, makers, and DIY professionals working with thermoplastic or injection-molded parts.

Specifications

Package Includes

• 335 or 360 × Knurled Brass Insert Nuts (M2–M6, mixed sizes)
• 1 × Sorting storage box

Perfect For

• 3D-printed part reinforcement
• Plastic enclosure assembly for electronics
• Prototype fabrication and repair
• RC model building and robotics
• Professional and hobbyist workshop use

Looking for more workshop essentials? Check out our 10-in-1 Multi-Functional Bone Wrench Hex Socket Spanner and the 16-in-1 Multi-Function Folding Hex Wrench Set to complete your toolkit.

Note: Please allow 1–2 mm variance due to manual measurement. Monitor color calibration may cause slight differences from the actual product appearance.

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What thread sizes are included in the brass threaded insert set?

A: The set covers M2, M2.5, M3, M4, M5, and M6 metric thread sizes, giving you a comprehensive range of knurled brass inserts suitable for most plastic fastening applications.

Q: Are these inserts compatible with 3D-printed parts?

A: Yes — these knurled brass threaded inserts are widely used in 3D-printed parts. They can be heat-set into thermoplastics (such as PLA, ABS, or PETG) using a soldering iron or dedicated heat-set tool, or press-fitted depending on the insert style selected.

Q: What is the difference between the 335-piece and 360-piece options?

A: Both options include the same M2–M6 size range and two insert styles, but differ in total quantity and size distribution per compartment. The 360-piece set provides a higher count overall, ideal for larger projects or bulk workshop stocking.

Q: How do I install these brass inserts into plastic components?

A: For heat-set installation, use a soldering iron set to an appropriate temperature to gently press the insert flush into a pre-drilled hole in the plastic. The knurled surface locks securely as the plastic cools around it. For press-fit styles, apply steady, even pressure until the insert seats correctly.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.