براغي رأس سداسي ثقيل 1 بوصة-8 × 5 بوصة | صناعة أمريكية | فولاذ A307 درجة B عادي | ملولبة جزئيًا (15/عبوة)

Threads cut clean and the hex heads grabbed my wrench without any rounding. These are solidly built, and the partial threading gave me plenty of grip for the steel frame I bolted together.

Installed these on a big equipment frame and the 1"-8 thread bit into the steel cleanly. The partial threading made it easy to snug down the nut without fighting the whole shaft. USA-made quality that feels solid.

Threads were clean and the partial threading grabbed perfectly when I bolted a jig frame together. Hex heads seated without stripping, and all fifteen had consistent plating. Solid buy for industrial work.