براغي ذات رأس سداسي 1-1/4-12 × 9" | صناعة أمريكية | سبائك فولاذ درجة L9 مطلي بالزنك الأصفر | ملولبة جزئيًا (6 / عبوة)

I used a 1/2" socket on these and they seated perfectly into pre-tapped holes on a steel frame. The yellow zinc finish looks nicely uniform across all six bolts.

The partially threaded design on these L9 alloy steel screws made a huge difference when I needed to fasten a thick bracket to a machine frame without the threads binding halfway through. The yellow zinc coating feels solid and hasn't shown any wear after a few heavy uses.

Needed a set of heavy-duty bolts for a press rebuild, and these grade L9 cap screws fit perfectly. The yellow zinc finish on the partially threaded shank looks solid, and they drove in smoothly with a socket.