M12×12mm ショルダースクリュー | ソケットヘッド | ソケットドライブ | 合金鋼 (25本/袋)

The precision-ground shoulder on these screws made them perfect for a small axle assembly I was prototyping—they ran true with almost no wobble. Even the hex socket drive felt tighter than standard bolts, which kept the driver seated during install. Exactly what I needed for a clean bearing surface.

Used a set of these to build a custom jig for work, and the precision-ground shoulder made alignment effortless across repeated cycles. The alloy steel feels tough, and the hex socket drive gave a solid purchase with no stripping. Exactly what I needed for a reliable pivot point.

The shoulder on these is machined dead-on, so they slip into a bearing bore without any wobble. Used a few as axle pivots on a jig and they're holding up great under load.