1PCS - Nut M3 M4 M5 Thread Knurled Hot Melt Brass Threaded Heat Set Heat Resistant Insert Embedment Nuts

Knurled Copper Nut
A knurled copper nut is a nut made of copper with a knurled or textured outer surface. It is designed for use in the extruder assembly of a 3D printer, where it plays a crucial role in filament feeding and extrusion.

Functions:
● Filament Grip: The knurled surface of the copper nut is designed to provide a firm and reliable grip on the 3D printing filament as it passes through the extruder assembly. This grip ensures that the filament is pushed through the hotend consistently during printing.
● Heat Conductivity: Copper is known for its excellent thermal conductivity. This property allows the knurled copper nut to efficiently transfer heat from the hotend to the filament, ensuring proper melting and extrusion.
● Durability: Copper is a durable and corrosion-resistant material, making it suitable for use in the extruder assembly, where it comes into contact with heat and plastic materials.
● Compatibility: Knurled copper nuts are typically designed to fit specific extruder designs and are often replaceable or upgradeable components. They are compatible with various 3D printer models and configurations.
● Extrusion Control: The quality of the grip provided by the knurled copper nut directly impacts the control and consistency of filament extrusion. This, in turn, affects the overall print quality.

Product details:
● Materials: Brass
*ID: internal diameter
*OD: external diameter
● M5: ID:5mm, OD: 7mm, Height: 10mm (A0472)
● M4: ID: 4mm, OD: 6mm, Height: 8mm (A0471)
● M3: ID: 3mm, OD: 4.5, Height: 4mm (A0470)

Features:
● Used on injection moulding for tightly fixing.
● No need to counterbore or countersink the boss hole because the insert has guide pilot.
● All nuts are made of high quality brass, which has high hardness, no deformation, durable and reliable for long use.
● Easy to install. From the moment that the insert has a valve conduit, there is no need to back-drill and counter-sink the hole.
● It can be installed by ultrasonic or heat in tapered bore wire, or molded in during injection.