براغي رأس سداسي 1/2-13 × 2-1/2 بوصة | صناعة أمريكية | سبائك فولاذ درجة L9 مطلي بالزنك الأصفر | ملولبة جزئيًا (50 / عبوة)

I needed heavy-duty bolts for a press repair, and these partially threaded hex heads seated perfectly without galling. The L9 alloy steel feels significantly tougher than standard grade 5 hardware I've used before.

The yellow zinc finish on these Grade L9 bolts looks uniform and clean, and the partial threading grabbed perfectly when I torqued them down on my press frame. All fifty heads were crisp with no rounded edges, which is rare for a bulk pack.

I needed a strong bolt for a heavy piece of equipment, and these Grade L9 alloy steel screws handled the torque without any issue. The yellow zinc coating looks good and should resist rust.