HOLO-KROME 09048 16mm X 40mm 套件肩螺絲 | 套件頭 | 套件驅動 | 合金鋼熱黑氧化物 (25/包)

The precision ground shoulder on these screws slid perfectly into my jig’s bearing surfaces with zero play—exactly the consistent fit I needed. I’ve already ordered another pack for a second project.

Used a couple of these as pivot pins in a jig I built, and the hex socket drive made tightening them in tight spots really easy. The black oxide finish held up well against a bit of oil and grime from the shop.

The precision ground shoulder on these is incredibly smooth—my small assembly spins on them like a bearing. They drive in cleanly with a hex key and the black oxide finish looks professional. Exactly what I needed for a pivot point.