100 Piece M3 Brass Knurled Threaded Insert Nuts Set For Plastic And 3D Printing With OD 5.3mm And Height 3 To 20mm Blind Hole Built To Last For Makers And Pros

100-Pack M3 Brass Knurled Inserts for 3D Printing Set
✔️ OD 5.3mm, height 3-20mm, blind hole, ultrasonic/heat install

These brass knurled threaded inserts are designed to secure components in plastic and 3D printed parts. They install via ultrasonic or heat into the plastic matrix, or can be formed during molding, delivering a strong, reusable threaded channel for M3 fasteners.

✅ Material: Brass knurled inserts
✅ Thread: M3, OD 5.3mm
✅ Height range: 3-20mm (blind-hole)
✅ Installation: Ultrasonic or heat-set into plastic; can be molded in
✅ Pack size: 100 pieces
✅ Applications: 3D printing, electronics assembly, circuit boards

💡 What is an M3 brass knurled threaded insert used for in plastic and 3D printing projects? These handy inserts create durable threaded holes for screws in plastic parts.

- Provides a reusable threaded boss for M3 screws in plastic and resin prints
- Improves the strength of joints in enclosures, PCBs, and housings
- Installed by heat-set, ultrasonic insertion, or molded-in during production
- Works with 5.3mm OD and 3-20mm height range for blind-hole designs
✝️