M5 x 40mm 錐點內六角止付螺絲 | 合金鋼 (80顆/包)

I needed screws that could handle a tight corner in a metal frame, and the cone point tip on these bit right into the pilot hole without slipping. The hex socket drive gave me plenty of control with my driver, and the 40mm length was exactly what I needed for a secure fastening.

Used a couple to lock down a jig on my drill press and the cone point bit into the metal nicely. The hex drive made tightening them easy even in a tight spot, and the 80-pack means I'll have spares for future projects.

Finally got my hands on a full pack of these M5 cone point set screws—the hex socket drive makes tightening in tight spots so much easier than a standard grub screw. The 40mm length is perfect for my jig build, and the alloy steel feels really solid.