M8 X 15mm 內六角肩螺絲 | 內六角頭 | 內六角驅動 | 合金鋼 (25入/包)

These shoulder screws fit perfectly into my jig's sliding mechanism. The hardened alloy steel really holds up under repeated clamping pressure, and the hex drive lets me torque them down without stripping.

I needed smooth pivots for a small robot arm, and these shoulder screws fit perfectly with zero wobble. The hex socket made installation a breeze using just a standard Allen key.

The precision-ground shoulder on these M8 screws is perfect for my small assembly jig—they spin smoothly as axle pins without any wobble. The socket head lets me cinch them tight with a hex key without stripping. Exactly the tight tolerance I needed for repeatable motion.