1/4-20 X 3/16" 滾花杯端止付螺絲 | 合金鋼鍍鋅 (250 顆/包)

The hex socket drive made torquing these into place a breeze, even in a cramped spot where a wrench wouldn't have fit. The knurled tip held firm on the shaft without any slippage, which is exactly what I needed. Packed 250 in a box, so I’ve got plenty for the next jobs.

The knurled cup point really bites into the shaft, so I don’t have to worry about these loosening up during use. All 250 pieces came well-packed and the zinc plating looks clean with no defects.

The hex socket drive made these a breeze to tighten in a cramped fixture, and the knurled cup point tip really gripped the material. I bought two packs for a tooling project, and every single screw seated perfectly.