براغي رأس سداسي 7/16-14 × 3-3/4 بوصة | فولاذ درجة 5 مطلي بالزنك الأصفر | ملولبة جزئيًا (25/عبوة)

These hex heads bit perfectly into my socket set, and the yellow zinc coating looks good on the machine frame. The partial threading made them easy to start by hand, and they held up to full torque without a hint of stripping.

Installed a set of these on a tractor PTO shaft this morning—the Grade 5 steel grabbed the socket without any cam-out. The yellow zinc coating looks like it’ll hold up to the weather here, too. Exactly what I needed for heavy equipment assembly.

Used these to bolt down a heavy press at work and the hex heads gave my socket wrench plenty of grip without stripping. The yellow zinc finish looks clean and hasn't shown any rust so far in a damp shop.