M16 X 50mm 內六角肩螺絲 | 內六角頭 | 內六角驅動 | 合金鋼 (25個/包)

Needed a solid shoulder screw for a custom jig build—these M16s were spot-on. The precision-ground shoulder made alignment effortless, and the hex socket drive gripped perfectly.

I used a pair of these as pivot axles in a jig I'm building, and the precision-ground shoulder made for a noticeably smooth fit in the bearings. The hex drive seated the screws firmly without any wobble.

The precision-ground shoulder made setting up a pivot for a jig build almost effortless, and the hex drive seated firmly without stripping. All 25 pieces arrived clean and uniform, so I’ve already used half of them as axle spacers.