براغي رأس سداسي 1/2-13 × 2-1/4 بوصة | صنع في الولايات المتحدة الأمريكية | سبيكة فولاذ PFC9 زنك أصفر (50 / عبوة)

Used these to bolt a heavy-duty press frame together, and the yellow zinc held up well against shop grime. The hex heads gave my wrench a solid bite without rounding off. Exactly the ruggedness I was hoping for from a USA-made fastener.

Threaded these into an old milling machine base without any binding—the yellow zinc coating made them slide in smooth. They cinched down tight with a wrench and held fast through a full shift. Exactly what I needed for heavy industrial work.

Packed a full day of equipment repairs and these hex heads drove cleanly with a socket, no cam-out or stripped threads. The yellow zinc finish held up well against shop grime and occasional rain. Exactly what I needed for heavy-assembly jobs.