مسامير رأس مقبس مقاس 7/8-9 × 6 بوصات | محرك مقبس سداسي | رقعة نايلون | ملولبة جزئيًا | فولاذ سبائكي مؤكسد حراري أسود (10/عبوة)

The hex socket drive grabbed perfectly without stripping, and the nylon patch held firm even after I torqued them down in a jig. The thermal black oxide finish gave a nice, uniform look without any flaking during installation.

I used these to secure a heavy jig on my milling table and the nylon patch holds perfectly, no loosening under vibration. The hex socket drive gave me a solid grip even in a tight spot.

The thermal black oxide finish wiped clean easily and hasn't shown any rust after a week in my shop. Threads started smooth with no binding, and the nylon patch held tight on the third reinstall. Exactly what I needed for a tooling fixture.