براغي رأس تجويف M4-0.7 × 8 مم برأس كروي سداسي بمحرك تجويف بخيوط كاملة من ستانلس ستيل 316 (900 حبة/عبوة)

Finally found some M4 hardware that doesn't pit or discolor in our saltwater testing tank—the 316 stainless holds up perfectly. The hex socket drive is a nice upgrade over slotted screws for our jigs, and a full package of 900 will last quite a while.

Been using these for jigs and fixtures in my shop, and the 316 stainless is holding up way better than the cheap zinc ones I used before. The button head profile sits flush enough for most of my clamping setups, and a full 900 in the pack means I won't be scrambling for spares anytime soon.

The hex socket drive on these M4 screws made installation a breeze with my Allen key, and the 316 stainless steel feels much more corrosion-resistant than the cheaper ones I've tried. I used a full 900-pack for a set of outdoor jigs and didn't find a single defective thread. Exactly what precision w