M16-2 X 190mm ソケットキャップスクリュー | 六角ソケットドライブ | 部分ねじ | クラス12.9合金鋼 サーマルブラックオキサイド (10個/パッケージ)

Tensioning the bolts on a press die set was much smoother with these—the hex socket gripped perfectly without any cam-out. The 190mm length gave me just enough thread engagement for a thick fixture plate without bottoming out.

The black oxide finish on these M16 screws gives them a nice, uniform look, and the hex socket drive seated perfectly with my Allen key without any stripping. I used them for a heavy-duty tooling fixture and the 12.9 alloy steel feels rock solid under tension. Exactly what I needed for precision ass

I needed some heavy-duty fasteners for a jig I'm building, and the 12.9 alloy steel on these feels incredibly hard and durable. The hex socket drive engaged perfectly with my allen key, giving a solid, slip-free grip. My only tiny surprise was the thermal black oxide finish is more matte than I expe