مسامير رأس كبس 1-3/4-5 × 15 بوصة | محرك سداسي | ملولبة جزئياً | فولاذ سبائكي مؤكسد أسود حراري

The black oxide finish on these screws looks professional and resisted scratching well during my machining setup. The hex socket drive made installation quick and secure.

These fit my jig fixtures perfectly, and the black oxide finish gives them a nice, uniform look that resists fingerprints well. The 15-inch length is exactly what I needed for reaching through stacked tooling plates, and the hex socket drive seated cleanly without any stripping. They're solid, hefty

The thread engagement on these is absolutely flawless, they threaded into my fixture plate without any binding or galling. The black oxide finish gave them a nice uniform look too, which is a bonus for a functional part.