M3-0.5 x 4mm 內六角螺絲 | 六角驅動 | 全螺紋 | 316不鏽鋼 (1400顆/包)

The hex socket drive grips the Allen key perfectly, so no more rounded-out heads on these M3s. The 316 stainless finish looks clean and should hold up well in my jigs, and the 1400-count box is a solid value for the price.

I was tired of stripping cheap hardware on my robotics jigs, so I grabbed these M3-0.5 x 4mm socket cap screws. The 316 stainless steel has held up perfectly in a humid workshop environment without a hint of rust.

Needed some corrosion-resistant fasteners for a jig that sees coolant mist every day, and these 316 stainless M3s are exactly what I was after. The fully threaded design grips nicely even in thin materials, and the hex socket drive lets me torque them down without stripping.