براغي رأس أسطواني 1/4-20 × 2-1/4 بوصة | محرك سداسي | بطانة نايلون | خيط جزئي | فولاذ سبائكي مؤكسد حراريًا أسود (100/عبوة)

Used a few of these to repair a jig in my workshop, and the hex socket drive made tightening them in a tight spot easy. The black oxide finish looks clean and professional, too.

The nylon patch on these is a lifesaver—they held firm on my milling fixture after a full day of vibration without a single one backing out. Black oxide finish looks sharp and the partial threading made alignment in tight spots much easier.

I put these to use building a jig for a router table, and the hex socket drive made tightening them in tight spots a breeze. The thermal black oxide finish feels tough and gave them a nice, uniform look against the steel parts.