M16 X 45mm 內六角肩螺絲 | 圓頭 | 六角驅動 | 合金鋼 (25顆/包)

The precision-ground shoulder made these slide into my bearing bores with almost zero play, exactly what I needed for an axle setup. Fit is snug and the hex drive took torque without stripping; 25 in the pack is plenty for a couple of builds.

I used these as pivot pins in a custom jig, and the precision-ground shoulder made alignment dead simple with zero wobble. The 25 pack gives great value for prototype work.

The socket drive took my hex key perfectly without any wobble, which made installation feel solid and precise. I’m using them as axle pins on a small custom build and the ground shoulder provides a smooth, true bearing surface. Exactly what I needed for a tight-tolerance application.