M3-0.5 X 50mm 機器螺絲 | 一字槽圓頭 | 18/8 不鏽鋼 (400 個/包)

The 400-count box is a solid value if you’re always running out of smaller hardware mid-project. The 18/8 stainless feels properly rigid, and they’re genuinely non-magnetic, which I tested with a magnet before using them outdoors. Slotted heads bit the screwdriver well enough, though I’d still use a

I needed some longer M3 screws for a small robotics frame, and these 50mm ones were just the ticket. The cheese head and slotted drive make them easy to tighten by hand in tight spots. So far they’ve held up well in a damp garage without any sign of rust.

I needed decent corrosion resistance for some outdoor deck fasteners, and these 304 stainless steel M3-0.5 screws are strong and completely non-magnetic. The slotted head gives good grip with a standard screwdriver, and the 50mm length fits my application perfectly.