M6-1 X 14mm 內六角螺絲 | 平頭內六角驅動 | 全螺紋 | 強度等級10.9 合金鋼 熱處理黑氧化物 (900顆/包)

I needed a bulk batch of machine screws for building custom jigs, and these 14mm flat heads with the black oxide coating went in cleanly and held tight. The entire pack looked consistent with no burrs or stripped threads.

The hex socket drive fits my Allen keys perfectly with zero slop, and the thermal black oxide coating has held up nicely against oily shop fingers. 900 pieces in one box means I probably won't need to reorder for a couple of years, which is exactly what I wanted for my fixture builds.

I’ve been swapping these into my jigs and fixtures, and the hex socket drive makes them a breeze to seat even in tight spots. The thermal black oxide finish has held up through a few oily jobs without a hint of rust, and the 900-count box is a solid value for production runs. For 10.9 alloy steel at