M16-2 X 120mm 六角穴付きボルト | フラットヘッド六角穴付き | 部分ねじ | クラス12.9合金鋼亜鉛メッキ (25本/袋)

The flat head hex socket on these M16 bolts lets me get a perfect flush fit in my jig plate, and the 120mm length gives plenty of thread engagement. All 25 pieces had clean threads and consistent zinc coating—no burrs or rust spots. Worked great for securing a heavy-duty machinery guard I’m assembli

For the price, these bolts are incredibly tough; the Class 12.9 rating definitely holds up under heavy clamping load. The flat head sits flush perfectly, so I am actually glad I switched to these for my tooling builds.

I needed these for a jig I was building, and the 12.9 alloy steel gives me confidence they'll hold up under heavy use. The partial threading made alignment much easier than I expected.