M6-1 x 40mm 六角頭螺絲 | 10.9級鋼鍍鋅 | 全螺紋（每包1750個）

Just put together a new jig for the shop and these M6x40mm bolts cinched everything down tight with no thread binding. The zinc coating looks clean and uniform across all 1750 pieces.

These hex bolts fit perfectly in my socket wrench, and the zinc plating looks like it'll hold up well in a damp workshop environment. Having a full box of 1750 means I won't be running out for a long time.

I needed a batch of M6 bolts for a quick assembly job, and these 40mm fully threaded ones worked perfectly with a standard wrench. The zinc plating seems durable, and the threads were clean with no burs. Exactly what I expected for industrial use.