براغي آلية M3-0.5 × 40 مم | رأس جبنة محرك مشقوق | فولاذ مقاوم للصدأ 18/8 (600 / عبوة)

I needed exactly 40mm length for my project and these fit perfectly. The cheese head slots took a standard screwdriver well without stripping, and they’re definitely non-magnetic as described.

The 18/8 stainless steel is non-magnetic, which was exactly what I needed for a sensitive electronics project, and the cheese head gives a solid grip for a small slotted driver. Six hundred of them for the price made the order feel like a steal.

The 40mm length is spot-on for my washdown rig, and the 18/8 stainless feels rock-solid with zero rust after a month of wet use. Non-magnetic too, which saved me from a headache with my sensor mounts.