براغي رأس سداسية 1/2-13 × 3-3/4" | فولاذ درجة 5 أصفر زنك | ملولبة جزئيًا (25 / عبوة)

I was struggling with a stripped thread on an old milling machine, and these 1/2-13 hex bolts grabbed perfectly thanks to the partial threading. The yellow zinc finish still looks clean after a few weeks in the shop.

Used these to bolt down a heavy press in the shop and the Grade 5 yellow zinc held up perfectly under torque without stripping. The hex head gave my socket wrench a solid grip even in a tight spot.

The partially threaded shaft made installation a breeze since I only needed threads at the very end for the nut. These grade 5 bolts feel solid and the yellow zinc coating looks like it will hold up well in my shop.