براغي رأس سداسي 1/4-20 × 3-1/2 بوصة | فولاذ درجة 5 مطلي بالزنك الأصفر | ملولبة جزئيًا (100/عبوة)

The partially threaded design made alignment a breeze when I was bolting down a motor mount, no fighting with the threads. These Grade 5 bolts feel plenty sturdy for the industrial rack I put together, and the yellow zinc coating has held up nicely so far.

The hex head grabbed my socket wrench perfectly without any stripping, and the yellow zinc finish looks clean even after a week on my jig. Threads cut into the steel plate smoothly, and the partial threading gave me that snug hold where I needed it.

The partially threaded section made aligning everything in the equipment frame a breeze, and the yellow zinc finish looks sharp against the steel. These hex heads grabbed onto my socket wrench cleanly, no stripping or rounding off even under some serious torque.