220pcs Brass Heat Set Insert Nuts Kit for 3D Printing – M2 M2.5 M3 M4 M5 M6 Knurled Threaded Inserts

Tired of plastic threads stripping after just a few assembly cycles? The amiciKart 220-Piece Brass Heat Set Insert Nuts Kit gives your 3D printed parts the strength of metal threads — permanently.

This comprehensive kit includes M2, M2.5, M3, M4, M5, and M6 knurled threaded inserts across multiple lengths, all crafted from high-quality brass. The knurled outer surface bites deep into the surrounding plastic as the insert cools, creating a rock-solid, pull-out-resistant anchor. Unlike tapping plastic directly, these inserts handle repeated screw-in and screw-out cycles without degrading — making your assemblies truly reusable and professional-grade.

Installation is refreshingly simple: press the insert into your pre-drilled hole using a standard soldering iron or dedicated heat-insert tip, and it melts flush in seconds — no cracking, no warping, no mess. Compatible with all major 3D printing materials including PLA, ABS, PETG, resin, and nylon, this kit is the go-to solution for hobbyists building RC models, engineers prototyping enclosures, robotics makers, and anyone who demands reliable fastening in printed parts.

With 220 pieces covering six metric sizes in one organised kit, you'll always have the right insert on hand — whether it's a quick repair or a complex multi-part assembly. Sold by amiciKart with free shipping all across India, same-day dispatch on orders before 2 PM, and a 30-day easy return policy, this is a zero-risk upgrade to your 3D printing toolkit. 🔩

• 🔩 Eliminate stripped plastic threads permanently — high-quality brass construction with knurled outer surfaces grips firmly inside plastic, so threads never loosen or pull out under repeated use
• 📦 One kit covers every project — 220 pieces spanning M2, M2.5, M3, M4, M5, and M6 sizes in multiple lengths, ideal for hobbyists, prototypers, and professional makers alike
• 🖨️ Works with all popular 3D printing materials — compatible with PLA, ABS, PETG, resin, nylon, and most other thermoplastics for durable metal threads in soft parts
• ⚡ Fast, clean installation every time — inserts melt smoothly into plastic using a standard soldering iron or heat-insert tool without cracking, warping, or deforming your printed parts
• 🛠️ Versatile across industries — perfect for 3D printers, robotics, electronics enclosures, RC models, custom tools, prototypes, and mechanical repairs
• 🚚 Shop risk-free with amiciKart — free pan-India shipping, same-day dispatch on orders before 2 PM, COD available, and a 30-day no-questions-asked return policy