1/2" x 7 1/2" 內六角肩螺絲 | 內六角頭 | 內六角驅動 | 合金鋼 (25 個/包)

Installed one as a bearing surface in a jig I'm building, and the precision-ground shoulder spins true with zero wobble. The hex socket drive made tightening it into place easy even in a tight spot, and the 7 1/2 inch length was exactly what I needed for this application.

The shoulder on these is ground so smooth they slide into a bearing bore without any wobble, which is exactly what I needed for a pivot assembly. All 25 came out of the package with clean threads and no burrs, so the whole batch is going straight into service.

Finally found shoulder screws long enough for a heavy pivot I'm building. The alloy steel feels solid and the hex drive cut clean threads without any wobble. Just what I needed for this repair.