Grub Screw M3 x 3mm Internal Hex for 3D Printer Timing Pulley
Brand: Generic3D Printer & CNC Parts
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 13 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
An M3 x 3 mm grub screw with an internal hex head drive, used to secure a timing pulley to a shaft in 3D printer and CNC builds. Grub screws have no head and tighten directly against the shaft. This listing is sold as a single piece.
Specifications
- Thread size
- M3
- Length
- 3 mm / 3 مم
- Drive type
- Internal hex / سداسي داخلي
- Quantity
- 1 piece / قطعة واحدة
- Application
- Timing pulley / بكرة التوقيت
Frequently asked questions
What is a grub screw used for?
A grub screw locks a pulley or collar onto a shaft. It is tightened with an internal hex key so its tip presses against the shaft.
Is M3 x 3mm the right size for my pulley?
Check the set-screw thread and the pulley's hole size before ordering. This listing is M3 x 3 mm and is intended for timing pulleys.
