The M3 × (4–6mm) Copper Inlay Knurled Heat Insert Nut is a premium-quality threaded insert made for 3D printed parts, plastic enclosures, and mechanical assemblies. Designed from high-conductivity copper alloy, these nuts deliver strong, reusable threads and secure fastening in thermoplastic materials like PLA, PETG, ABS, and Nylon.
Its knurled (diamond-patterned) outer surface ensures a firm grip when heated and pressed into plastic, preventing loosening or pull-out under stress. Whether you’re building a robot, assembling a 3D printer, or designing custom enclosures, these inserts provide a professional, long-lasting connection.
Available Sizes:
-
M3 × 4mm
-
M3 × 5mm
-
M3 × 6mm
Key Features:
🔹 High-Quality Copper Alloy – Excellent thermal conductivity and corrosion resistance.
🔹 Knurled Grip Design – Provides strong mechanical bonding inside plastic.
🔹 Reusable Threaded Insert – Allows repeated screwing without damaging the part.
🔹 Easy Heat Installation – Works perfectly with a soldering iron or heat press.
🔹 Multiple Lengths (4–6mm) – Ideal for thin and thick 3D printed parts.
Specifications:
-
Type: M3 Heat Insert / Knurled Threaded Nut
-
Inner Thread: M3 (3mm)
-
Outer Diameter: ~5mm
-
Length Options: 4mm / 5mm / 6mm
-
Material: Copper Alloy (Brass Finish)
-
Installation: Heat Insert (press-in with heat tool)
Applications:
-
3D printer assemblies and enclosures
-
Robotics and drone projects
-
Plastic parts and electronics casings
-
Prototyping and mechanical joints
-
CNC and DIY projects requiring threaded inserts
Installation Tips:
-
Preheat a soldering iron to 180–220°C.
-
Place the nut on the hole and press gently as it melts into the plastic.
-
Let it cool completely for a strong, permanent bond.
Why Choose Radiogear BD:
Since 2019, Radiogear BD has been providing trusted hardware and robotics components for makers and engineers across Bangladesh. Our M3 Copper Knurled Heat Insert Nuts are precision-made to ensure secure, durable, and professional-grade threads in any 3D printed or molded project.
Get a stronger, cleaner, and more professional finish with M3 × (4–6mm) Copper Inlay Knurled Heat Insert Nuts — perfect for 3D printing, robotics, and electronic assemblies.
