M4-0.7 x 30mm 內六角螺絲 | 內六角驅動 | 部分螺紋 | 316 不鏽鋼 (400 / 包)

I've been using these M4 screws for jigs and fixtures in my workshop for a few weeks now, and the 316 stainless is holding up perfectly with zero rust despite the humid conditions. The hex socket drive bites cleanly every time, and the partially threaded design makes them ideal for clamping thicker

Philly strip on these is clean and uniform, and the 316 stainless threads cut smoothly into aluminum without binding. Bought 400 for a fixture build and every single one seated flush with no duds in the box.

Got my order of 400 and the packaging alone made it easy to inventory—each screw is clean, no burrs on the threads. The partial threading on these M4s is perfect for my jig builds where I need a smooth shank for alignment.