M16 X 40mm 平頭內六角止付螺絲 | 合金鋼 (25 個/包)

I needed some serious holding power for a heavy steel bracket, and these M16 screws with the hex socket drive let me really torque them down without stripping. The 40mm length was perfect for getting through the wood and deep into the stud.

The flat point tip seated perfectly into the shaft keyway without any wobble, and the alloy steel feels solid even under a wrench. I've got a full 25-pack now, so I'm set for any job that needs a firm, flush hold.

The hex socket drive made cinching these down in a tight spot way easier than wrestling with a wrench. Threads cut clean and the flat point seats firmly without walking, plus all 25 arrived with no burrs or defects.