Brass Heat Set Threaded Inserts M4 X 4mm Length 6mm OD Knurled Female Metric Nuts For 3D Printing Plastic Parts Electronics DIY Projects PCBs 50 Pack

Brass Heat-Set M4 Inserts with Knurl, 6mm Head, 50 Pack
✔️ 50 pcs M4 brass heat-set inserts, 6mm head, knurled grip

These brass heat-set threaded inserts embed into thermoplastics to create durable, reusable threads. They are ideal for 3D printed parts, electronics enclosures, PCB mounting, furniture hardware, and DIY projects.

✅ Pack size: 50 pieces
✅ Thread: M4 x 4 mm; head diameter 6 mm
✅ Material: brass, anti-rust, high thermal conductivity
✅ Knurling: geometric knurling for high bite and torque
✅ Installation: heat-set or ultrasonic into ABS, PLA, PETG, PP

💡 What is a heat-set brass insert used for?

Heat-set inserts are handy for adding strong, reusable threads to plastic parts. - Creates durable threads in thermoplastics for screws.
- Handy for 3D printed parts, electronics housings, and furniture.
- Works with heat-set or ultrasonic insertion for quick, clean installs.
- Supports M4 fasteners with solid bite and load distribution.