براغي رأس مقبس | 2-4-1/2 × 9" | مشغل بمقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي أكسيد حراري أسود

The hex socket drive made installation straightforward with my Allen wrench, and the 9-inch length was perfect for securing a heavy jig base. These screws hold tight without any stripping, even with repeated adjustments.

The black oxide finish on these screws gave them a grippy, non-reflective surface that handled nicely during assembly. They torqued down cleanly with the hex drive, and the partial threading saved me time aligning my jig setup. Exactly what needed for a machinery project, no complaints.

Used these to rebuild a jig at work and the hex socket drive made installation into tight spots a breeze. The partially threaded shank gave exactly the grip length I needed for the assembly.