براغي ذات رأس أسطواني مقاس 3/4-10 × 17" | محرك مقبس سداسي | خيط جزئي | فولاذ سبائكي مؤكسد أسود حراريًا

I needed extra-long bolts for a custom jig, and these 3/4-10 x 17" screws fit perfectly into my fixture plate. The hex socket drive made tightening them a breeze, even in tight spaces. The black oxide finish also seems to resist rust well.

Used a dozen of these to rebuild a rotary table jig and the hex drive took torque without stripping. The 17-inch length was exactly what I needed for clamping thick workpieces, and the threading grabbed cleanly right out of the box.

The partially threaded design made installation on my press fixture a lot easier, since I didn't have to chase threads the full 17 inches. Torqued them down without any stripping, and the black oxide finish looks clean and professional.