M20 x 70mm 杯端內六角止付螺絲 | 合金鋼鍍鋅 (25個/包)

The cup point bit right on these M20 screws grabbed tight into the shaft without any slipping, and the zinc coating looks clean and durable.

Installed these in a steel jig where I needed a flush finish, and the hex socket let me torque them down easily in a cramped corner. The zinc plating on the alloy steel seems decent so far, no rust spotting after a week in the shop.

The cup point digs in properly once you torque it down with a hex key, and the zinc plating held up fine against my oily fingers during install. All 25 came with clean threads, no burs, which is more than I can say for other packs I've ordered.