1/2-13 × 2-3/4" 套帽螺絲 | 平頭六角驅動 | 部分螺紋 | 合金鋼熱黑氧化物 (50 / 包)

I needed partial threads for a jig assembly, and these 1/2-13 screws let me tighten into a blind hole without bottoming out. The black oxide coating wiped off nicely after fitting, and the hex socket drove smoothly even in tight spaces.

Exactly the right length for my fixture build—the partial threads grabbed cleanly and the hex socket seated without any wobble. Fifty in the pack means I’ve got spares for the next job, and the black oxide already looks like it’ll shrug off shop grime.

The black oxide finish on these screws gives them a nice, professional look for my fixture builds, and the hex drive made installation smooth without any cam-out issues. They threaded cleanly into tapped holes, and the partial threading left room for clamping plates.