2-BA x 3/8" 內六角螺絲 | 平頭六角驅動 | 全螺紋 | 合金鋼熱處理黑色氧化 (100個/包)

I needed a handful for an antique restoration, and these 2-BA cap screws fit perfectly in the hex socket. The black oxide finish looks great against the old steel, and the threads are clean all the way through.

Finally, a proper source for 2-BA machine screws that aren't junk. The hex socket drive grips perfectly even in tight spots, and the thermal black oxide coating has a nice, uniform matte look. Used a full pack on a jig build and not a single stripped thread.

The black oxide finish on these 2-BA screws is impressively consistent across all 100 pieces, and the hex socket drive makes installation a breeze with my 2-BA Allen key. They fit perfectly into the jig I’m building.