براغي رأس سداسية 1/2-13 × 3-1/2 بوصة | صناعة أمريكية | درجة L9 من سبائك الفولاذ مطلي بالزنك الأصفر | ملولبة جزئيًا (25/عبوة)

The partially threaded design made these screws easy to start by hand before torquing them down with a socket. The yellow zinc finish on the Grade L9 steel looks clean and hasn't shown any rust after a few weeks in my shop.

These bolts held up perfectly when I torqued them down on my press, and the yellow zinc coating still looks brand new after a week of oily shop use. The partial threading made alignment much easier than dealing with a fully threaded rod.

The partially threaded design made these easier to start by hand than fully threaded bolts. They tightened up nicely with a socket and feel solid in heavy steel brackets. Only thing is the yellow zinc is slightly more matte than I expected.