M16-2 x 120mm 內六角螺絲 | 內六角驅動 | 全牙 | 316不鏽鋼（25顆/包）

The hex socket drive fits my hex key perfectly with zero wobble, and the 316 stainless finish handles salty shop air without a speck of rust. I used a full pack on a custom jig and every screw seated consistently tight.

Used these to secure some heavy-duty jig fixtures on my milling table, and the 316 stainless held up perfectly without any galling. The 120mm length was just right for stacking multiple plates, and the hex drive seated well with my standard allen key.

The 120mm length and full threading made alignment straightforward on our tooling fixture. Took a star off only because the hex socket felt a touch tight for my standard Allen key, but they seated firmly once driven.